right and wrong

sexual minority

miscellany, generalist, (a thing or set of things) not specialized in a particular field

gossip, small talk

(astronomy) declination

(physics) world line

historic, historical / already-happened, past / former, old, traditional

historian

study of history

(Internet slang, especially anime and manga fandom) events or things from the past which one wants to whitewash/erase from history (due to it being embarrassing, poorly received, etc.); dark past