Adjectives. Remember learning about those in elementary school? We are a diverse collection of humans who employ countless adjectives to describe ourselves. Each one important yet unable to represent all that we are. To name a person as solely an adjective is to deny their humanity.
That’s why “she is a transgendered woman” is acceptable, but “she is a transgender” is not. “The black community” works, but “the blacks” makes you sound intolerable (looking at you, big Donny J. Trump).
If you find yourself in need of a label and not sure what to use, remember we all start as people.