boater vs skimmer

boater and skimmer both are nouns.

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

As nouns, boater and skimmer are synonyms defined as:

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

boater (noun)	skimmer (noun)
a stiff hat made of straw with a flat crown	gull-like seabird that flies along the surface of the water with an elongated lower mandible immersed to skim out food
someone who drives or rides in a boat	a stiff hat made of straw with a flat crown
	a cooking utensil used to skim fat from the surface of liquids
	a rapid superficial reader