What do OVA and OAD in anime mean?

OVA: The abbreviation of Original Video Animation. Generally refers to TV series that are mainly released through DVD, Blu-ray discs and other video discs. It also refers to some animated series that are smaller than the original works and have different content

OAD, Original Animation Disc (Original Animation Disc) or original animated DVD, essentially synonymous with OVA.

Menu is the page you choose when watching DVDs

CM, Comic Market is the largest doujinshi sales event in Japan and even the world organized by the Comic Market Preparation Association

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PV is the abbreviation of Promotion Video, a common name for MV (music video) in Japan.

SV means SB, which is a malicious and insulting word, meaning a very stupid person. It is widely used in various situations by ruffians and hooligans in the market.

Animation, which is the collective name of animation and comics, refers to the collection of animation and comics. Taking the first character of these two words and combining them into one is called "animation". It has nothing to do with games, not Professional terminology. Among them, Japanese animation is a typical representative in the field of animation and a leader in the field of animation.

On many occasions, the word "animation" is mistakenly used to refer to "animation", which can easily lead to ambiguity.

Data reference: Baidu Encyclopedia animation