The prevailing wisdom1 is that the term "waifu" originates from a scene from the 2002 anime Azumanga Daioh; specifically, this scene from episode 15.
Some context: the male character in that scene, Mr. Kimura, is a teacher at the school the female characters in that scene attend. Mr. Kimura has a well-deserved reputation for being generally ...
All of these are closely related and many games would fall into more than one category. However, which word you choose places the emphasis on different aspects of the game. In any case, when it isn't important to be precise, these terms are often used interchangeably.
Eroge (エロゲ) is a Japanese shortening of "erotic game". These can also be called H-games. ...
These terms are used a bit inconsistently, but what I'm answering here should be fairly uniform across a lot of the English-speaking community. I can't tell where the terms originated, but it might be an analogy to blood types, which are important in Japanese culture. It could also be a reference to Type A and B personality theory.
Type A fans are ...
Here is an academic paper1 with an analysis of the concept of moe, including its history and origin, relationship to the socio-economics of Japan, previous academic studies of moe, otaku and fujoshi psychology, and a very in-depth analysis of what moe actually is.
A short table of contents of the topics covered:
Japanese critical discourse
Emergence of ...
OVA and OAV are synonymous. The reason for having two acronyms is historical; currently, both Japan and English-speaking countries use "OVA" as the official designation.
According to the Japanese Wikipedia (rough translation):
In the early days, "OAV" (short for "original animation video") was often used as well, but "AV" and "Adult Video" were easily ...
What is a light novel?
A light novel is a style of Japanese novel targeting teenagers and young adults. These novels contain mostly illustrations in anime or manga style. They are usually published in bunkobon size (A6 – 105 x 148mm). Light novels are not very long. The length is comparable to a novella in US publishing terms.
Light novels are very popular ...
One of the four conventional three-month periods of television broadcasting in Japan (January to March; April to June; July to September; October to December): "Noragami" aired during the first cour of 2014.
A portion of a television program aired over the course of one cour1: The big reveal at the end of the first ...
Chuunibyou describes teenagers around the age of fourteen that try to look cool to impress people around their age and are self-important trying to be unique.
This way of thinking, however, may continue even after the teen reaches adulthood, but it does not actually relate to any medical condition or mental disorder.
It's more like a growth phase for some ...
In Japan, the term is called eyecatch, which is also known as bumper. As the question has mentioned, it's usually to indicate the start and end of the commercial break.
In broadcasting, a commercial bumper, ident bumper or break-bumper (often shortened to bump) is a brief announcement, usually two to fifteen seconds in length that can contain a voice over,...
Doujinshi is closer to what we think of as "indie/self-published" comics compared to manga. Professionals can produce doujinshi as well as amateurs, and many mangaka will produce doujinshi on the side when they're otherwise unable to produce a certain work for legal reasons.
Doujinshi are often, but not limited to:
Fanart of pre-existing intellectual ...
Anime basically translates to animation, so the Japanese don't really have a distinction. Claymation for example could qualify as 'anime' in the East.
From a Western perspective, 'anime' is a looser term, generally meaning animations from Japan, but sometimes it's applied to Western shows with the anime 'look', like RWBY or Avatar.
There's no strict ...
Is a "character song" just like a theme song for a character?
A "character song" is emphatically not the same thing as a "theme song". While there is probably no clear definition of what constitutes a "theme song", the term "character song" has a straightforward definition. That is: a "character song" is a song whose vocals are credited to the ...
Let's look at the meaning of the words separately.
A quick google search tells us that a gap is a space or interval; a break in continuity. It can also mean to be a difference. Here is a post that addresses what moe is. If I were to describe it myself, it is the feeling you get when you see someone/something so cute you just want to hug them and take them ...
I'm not sure if this is what you're looking for, but according to Japanese Wikipedia articles for those series, they can be called tanpen anime (短編アニメ, short anime).
From April to June 2013, a 5 minute tanpen anime was aired on TV Tokyo and Nico Nico Douga.
Recorder and Randsell:
The word waifu (ワイフ) is an "Engrish" term for "wife". It is likely the preferred term for "wife" among English-speaking otaku because of its auditory similarity to the English term and its phonetic similarity to Japanese.
Its origin is likely from a dialog by an Azumanga Daioh character named Mr. Kimura. When a pair of characters picks up a dropped photo, ...
The four are loosely defined as follows:
A visual novel is an interactive game which is primarily a narration that uses still images to convey a scene or character; these two components make up the parts of the name, "novel" and "visual" respectively.
The word eroge is the Japanese term for any erotic (or, I believe, hentai) game; I believe the name comes ...
For Yuri vs. Shoujo-ai, according to Wikipedia:
Yuri focuses on the sexual or the emotional aspects of the relationship, or both, the latter of which sometimes being called shōjo-ai by western fans.
In North America, yuri has initially been used to denote only the most explicit end of the spectrum, deemed primarily as a variety of hentai. ...
The terminology probably comes from programming. With most visual novel games the terminology "flag" and "counter" go hand-in-hand.
In the background of a game, there are various variables, the most notable ones are the "global" and "local" variables. These variables usually what counters and flags consists of.
Local variables are usually a point counter ...
There isn't much to add to your concise classification, really.
The word itself (少女) is used to refer to a young woman, approximately 8-17 years old. Right as you might think, Shōjo manga and anime have them as target audience. Shōjo isn't limited to any particular style or styles, it's only defined by the target demographic.
This kanji (少年) ...
There is one particular style of traditional Japanese comedy called manzai (漫才), which is a type of two-man act. One man is called the boke, who is the buffoon; the jokester; the funny guy. The boke will make jokes, many of which (to American audiences at least) are groan comedy. The other member of the pair is called the tsukkomi, and his job is to react to ...
MAD are probably refer to a broader classification of AMV from Japan.
According to the Nico Nico Pedia:
MAD refers to video and/or audio created by editing and rearranging existing video or audio, to give it new meaning. Basically, they are derivative, fan creations.
The name is probably derived from "MAD Tapes" from the 80s-90s which was the fad in ...
ONA and OVA are completely different in terms of their target markets.
An Original Net Animation (ONA) is an anime that is directly released onto the Internet(1) while an Original Video Animation (OVA) is an animated film or series made specially for release in home-video formats.(2)
The term ONA was first coined by the creators of Lingerie Fighter ...
What you listed cover many of the major differences, though there are others.
Almost always black and white
Full color with some panels rendered entirely in painting (1)
Single issue format (1)
From South Korea
Usually horizontal, left-to-right
Can be vertical, right-to-left, top-to-...
Here's a desctiption from Anime News Network
Moe is a Japanese term used in connection with manga or anime to
describe something precious, usually (but not always) the ideal of
youthful and innocent femininity. Written with the kanji for "to bud
or sprout" (萌), the concept covers a range of ideal behaviour for
youthful female characters in manga ...
The dere family along with tsundere (unapproachable outside, sweet inside), yandere (sweet outside, crazy inside) kuudere (cold outside, sweet inside), and dandere (asocial outside, sweet inside).
All of these terms are used to describe traits, rather than the characters themselves, so they are used asexually. However, because the terms (most prominently ...
This is purely conjecture.
I suspect that flags are effectively the same as booleans in computer programming which can have values of either true or false. In vexillological terminology, flags would either be raised or lowered. This makes things easier to understand and visualise when used in dating sim software. Furthermore, the existence of a number of ...
Japanese speakers may remember numbers by taking the prominent syllable from how they read numbers (語呂合わせ goroawase). There are more than one way on how to count: one that descended from Old Japanese (大和言葉 Yamato kotoba) and one borrowed from Chinese (漢語 kango). In the order of Yamato / Kango:
ひとつ hitotsu / いち ichi
ふたつ futatsu / に ni
みっつ mittsu / さん san
As @LoganM points out in a comment, noitaminA is a programming block on Fuji TV that initially went from 24:45-25:15 on Thursday nights (i.e. 12:45a-1:15a on Friday) and was later lengthened to 24:45-25:45.
Old noitaminA shows tended to have one major commonality - they targeted a different audience than most other late-night anime. Some good examples of ...
When referring to a novel, you'd be talking about...
A fictitious prose narrative of book length, typically representing character and action with some degree of realism.
Therefore I always assumed a light novel to be a short story of sorts, something you could read on the bus or on the train. After looking it up, I was wrong. A light novel apparently is ...