railroad vs ship

railroad and ship both are nouns.

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

As verbs, ship is a hypernym of railroad; that is, ship is a word with a broader meaning than railroad:

Other hypernyms of railroad include send, transport.

railroad (noun)	ship (noun)
line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight	a vessel that carries passengers or freight
a line of track providing a runway for wheels

railroad (verb)	ship (verb)
transport by railroad	place on board a ship
supply with railroad lines	transport commercially
compel by coercion, threats, or crude means	go on board
	travel by ship
	hire for work on a ship