derby hat vs bowler

derby hat and bowler both are nouns.

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

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

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

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

derby 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