submariner vs sailor

submariner and sailor both are nouns.

Word	Noun	Adjective	Verb	Adverb
submariner	Yes	No	No	No
sailor	Yes	No	No	No

As nouns, sailor is a hypernym of submariner; that is, sailor is a word with a broader meaning than submariner:

Other hypernyms of submariner include bluejacket, navy man, sailor boy.

submariner (noun)	sailor (noun)
a member of the crew of a submarine	a stiff hat made of straw with a flat crown
	any member of a ship's crew
	a serviceman in the navy