Panama hat vs boater

Panama hat and boater both are nouns.

Word	Noun	Adjective	Verb	Adverb
Panama hat	Yes	No	No	No
boater	Yes	No	No	No

As nouns, Panama hat and boater are synonyms defined as:

Other synonyms of Panama hat include leghorn, Panama, sailor, skimmer, straw hat.

Panama hat (noun)	boater (noun)
a stiff hat made of straw with a flat crown	a stiff hat made of straw with a flat crown
	someone who drives or rides in a boat