road vs curve

road and curve both are nouns.

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

road (noun)	curve (noun)
a way or means to achieve something	a pitch of a baseball that is thrown with spin so that its path curves as it approaches the batter
an open way (generally public) for travel or transportation	curved segment (of a road or river or railroad track etc.)
	the property possessed by the curving of a line or surface
	a line on a graph representing data
	the trace of a point whose direction of motion changes

road (verb)	curve (verb)
	form a curl, curve, or kink
	turn sharply; change direction abruptly
	form an arch or curve
	bend or cause to bend
	extend in curves and turns