bulwark vs ship

bulwark and ship both are nouns.

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

bulwark (noun)	ship (noun)
a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away	a vessel that carries passengers or freight
an embankment built around a space for defensive purposes
a fencelike structure around a deck