bowler hat vs bowler

bowler hat and bowler both are nouns.

Word	Noun	Adjective	Verb	Adverb
bowler hat	Yes	No	No	No
bowler	Yes	No	No	No

As nouns, bowler hat and bowler are synonyms defined as:

bowler hat and bowler: a felt hat that is round and hard with a narrow brim

Other synonyms of bowler hat include derby, derby hat, plug hat.

bowler hat (noun)	bowler (noun)
a felt hat that is round and hard with a narrow brim	a felt hat that is round and hard with a narrow brim
	a player who rolls balls down an alley at pins
	a cricketer who delivers the ball to the batsman in cricket