opera hat vs stovepipe

opera hat and stovepipe both are nouns.

Word	Noun	Adjective	Verb	Adverb
opera hat	Yes	No	No	No
stovepipe	Yes	No	No	No

As nouns, opera hat and stovepipe are synonyms defined as:

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

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

opera hat (noun)	stovepipe (noun)
a man's hat with a tall crown; usually covered with silk or with beaver fur	chimney consisting of a metal pipe of large diameter that is used to connect a stove to a flue
	a man's hat with a tall crown; usually covered with silk or with beaver fur