sloop vs raceabout

sloop and raceabout both are nouns.

Word	Noun	Adjective	Verb	Adverb
sloop	Yes	No	No	No
raceabout	Yes	No	No	No

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

sloop: a sailing vessel with a single mast set about one third of the boat's length aft of the bow
raceabout: a small sloop having the keep of a knockabout but with finer lines and carrying more sail

Other hyponyms of sloop include knockabout.

sloop (noun)	raceabout (noun)
a sailing vessel with a single mast set about one third of the boat's length aft of the bow	a small sloop having the keep of a knockabout but with finer lines and carrying more sail