crest vs route

crest and route both are nouns.

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

crest (noun)	route (noun)
a showy growth of e.g. feathers or skin on the head of a bird or other animal	an open way (generally public) for travel or transportation
(heraldry) in medieval times, an emblem used to decorate a helmet	an established line of travel or access
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)	route (verb)
reach a high point	send via a specific route
lie at the top of	divert in a specified direction
	send documents or materials to appropriate destinations