sailor vs yachtsperson

sailor and yachtsperson both are nouns.

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

As nouns, yachtsperson is a hyponym of sailor; that is, yachtsperson is a word with a more specific, narrower meaning than sailor:

Other hyponyms of sailor include hand, lascar, gob, Jack-tar, Jack, mariner, old salt, sea dog, seafarer, seaman, tar, water dog, water rat.

sailor (noun)	yachtsperson (noun)
a stiff hat made of straw with a flat crown	a person who owns or sails a yacht
any member of a ship's crew
a serviceman in the navy