system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Transexuals, Transvestites and Transgendered

I really don't know anything about sex changes, and everything I read is horribly complex.
gpt
A transvestite is somebody who crossdresses for sexual pleasure.

Transgender is the broadest term and essentially means something that goes outside gender normals.  Transsexuals, transvestites, drag queens/kings, and people in certain roles (such as the two spirit people in Native American societies.)

Transsexual means somebody whose mental gender identity does not match their physical body.  Somebody can fully transition and have surgery, and somebody can stay living as the gender they were born as, and still be considered transsexual.  One important note is that the official name of transsexuality has been changed from gender identity disorder (GID) to gender dysphoria.