railroad vs rails

railroad and rails both are nouns.

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

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

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