Do you know ghouls from goblins and ghosts?
1620s, from Latin discriminatus, past participle of discriminare "to divide, separate," from discrimen (genitive discriminis) "interval, distinction, difference," derived noun from discernere (see discern). The adverse (usually racial) sense is first recorded 1866, American English. Positive sense remains in discriminating. Related: Discriminated. Also used 17c. and after as an adjective meaning "distinct."