plug hat vs derby hat

plug hat and derby hat both are nouns.

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

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

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

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

plug hat (noun)	derby hat (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