crest vs sexual activity

crest and sexual activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
crest	Yes	No	Yes	No
sexual activity	Yes	No	No	No

crest (noun)	sexual activity (noun)
a showy growth of e.g. feathers or skin on the head of a bird or other animal	activities associated with sexual intercourse
(heraldry) in medieval times, an emblem used to decorate a helmet
the center of a cambered road
the top line of a hill, mountain, or wave
the top or extreme point of something (usually a mountain or hill)

crest (verb)	sexual activity (verb)
reach a high point
lie at the top of