Gender (n.) is not an effect caused by the body. Rather, the sexed body is a discursive effect of gendered thinking.
Gender (n.) is a stylized repetition of acts, a constructed identity, a performative accomplishment which the mundane social audience, including the actors themselves, come to believe and to perform in the mode of belief.
Gender (n.) is complex — There is more difference within the sexes than between them.
Gender (n.) is not something that one is, it is something one does, an act, a "doing" rather than a "being".
Gender identity (n.) is invisible to anyone whose own fits, and daily work for anyone whose does not.
Gender identity (n.) is the stylized repetition of acts through time. It is not a kind of seamless identity, but the repetitions of acts that makes it appear to be seamless.