dress hat vs top hat

dress hat and top hat both are nouns.

Word	Noun	Adjective	Verb	Adverb
dress hat	Yes	No	No	No
top hat	Yes	No	No	No

As nouns, dress hat and top hat are synonyms defined as:

dress hat and top hat: a man's hat with a tall crown; usually covered with silk or with beaver fur

Other synonyms of dress hat include beaver, high hat, opera hat, silk hat, stovepipe, topper.

dress hat (noun)	top hat (noun)
a man's hat with a tall crown; usually covered with silk or with beaver fur	a man's hat with a tall crown; usually covered with silk or with beaver fur