crest vs sex

crest and sex both are nouns.

Word	Noun	Adjective	Verb	Adverb
crest	Yes	No	Yes	No
sex	Yes	No	Yes	No

crest (noun)	sex (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 properties that distinguish organisms on the basis of their reproductive roles
the center of a cambered road	all of the feelings resulting from the urge to gratify sexual impulses
the top line of a hill, mountain, or wave	either of the two categories (male or female) into which most organisms are divided
the top or extreme point of something (usually a mountain or hill)

crest (verb)	sex (verb)
reach a high point	tell the sex (of young chickens)
lie at the top of	to evoke sexual feelings