rails vs railroad

rails and railroad both are nouns.

Word	Noun	Adjective	Verb	Adverb
rails	Yes	No	No	No
railroad	Yes	No	Yes	No

rails (noun)	railroad (noun)
a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll	line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight
	a line of track providing a runway for wheels

rails (verb)	railroad (verb)
	transport by railroad
	supply with railroad lines
	compel by coercion, threats, or crude means