pirate vs ship

pirate and ship both are nouns.

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

As nouns, ship is a hypernym of pirate; that is, ship is a word with a broader meaning than pirate:

pirate (noun)	ship (noun)
a ship that is manned by pirates	a vessel that carries passengers or freight
someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation
someone who uses another person's words or ideas as if they were his own

pirate (verb)	ship (verb)
take arbitrarily or by force	place on board a ship
copy illegally; of published material	transport commercially
	go on board
	travel by ship
	hire for work on a ship