railroad vs railroad tie

railroad and railroad tie both are nouns.

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

railroad (noun)	railroad tie (noun)
line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight	one of the cross braces that support the rails on a railway track
a line of track providing a runway for wheels

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