boater vs gondoliere

boater and gondoliere both are nouns.

Word	Noun	Adjective	Verb	Adverb
boater	Yes	No	No	No
gondoliere	Yes	No	No	No

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

Other hyponyms of boater include canoeist, paddler, ferryman, gondolier, rower, punter.

boater (noun)	gondoliere (noun)
a stiff hat made of straw with a flat crown	a (Venetian) boatman who propels a gondola
someone who drives or rides in a boat