H

H

 * Japanese usage:
 * noun: sex
 * adj.: being sexually provocative, having a "dirty mind", being a pervert, or in general be sex-related.


 * English usage:
 * verb: to have sex, not strictly limited to intercourse.
 * adj.: of sexually-oriented nature (only used for graphical entertainement medium)

Example: H scene in the context of games refers to a scene with nudity or sexual behavior.

Hentai

 * Japanese usage:
 * noun: pervert
 * adj.: having a "dirty mind", being a pervert


 * English usage:
 * noun: pervert, sexually-oriented graphical entertainment medium (in contrast to porn, which is photo-realistic)
 * adj.: of sexually-oriented nature (only used for graphical entertainement medium)

H vs Hentai
Pronounced as ecchi in Japanese, the term is believed to be derived from the first letter of hentai, the romanization of the word "pervert" in Japanese. However, the word hentai in Japanese context is only used to refer to individuals, whereas H as an adjetive (in Japanese context) can be used for just about everything. Note that their use in the noun form are completely different.

In English context, the adjetive forms of hentai and H are interchangable.