plug hat vs derby

plug hat and derby both are nouns.

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

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

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

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

plug hat (noun)	derby (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