SEAL vs sailor

SEAL and sailor both are nouns.

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

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

SEAL: a member of a Naval Special Warfare unit who is trained for unconventional warfare
sailor: a serviceman in the navy

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

SEAL (noun)	sailor (noun)
a member of a Naval Special Warfare unit who is trained for unconventional warfare	a stiff hat made of straw with a flat crown
	any member of a ship's crew
	a serviceman in the navy