(phonetics) sonority

to be heard / sound, be taken as (give someone a certain impression from hearing) / to be widely known; to be famous / to be audible

knock-knock (knocking sound)

a revolving door

knock (abrupt rapping sound) / (baseball) fungo

to knock / to press down on the rear end of a mechanical pencil and dispense lead

Western-style door

interrogative personal pronoun: who, whom

(archaic) interrogative personal pronoun: who, whom

(obsolete, persists in some fossilized expressions) interrogative personal pronoun: who, whom