road vs crest

road and crest both are nouns.

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

road (noun)	crest (noun)
a way or means to achieve something	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
	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)

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