Italian vermouth vs vermouth

Italian vermouth and vermouth both are nouns.

Word	Noun	Adjective	Verb	Adverb
Italian vermouth	Yes	No	No	No
vermouth	Yes	No	No	No

As nouns, vermouth is a hypernym of Italian vermouth; that is, vermouth is a word with a broader meaning than Italian vermouth:

Italian vermouth: sweet dark amber variety
vermouth: any of several white wines flavored with aromatic herbs; used as aperitifs or in mixed drinks

Italian vermouth (noun)	vermouth (noun)
sweet dark amber variety	any of several white wines flavored with aromatic herbs; used as aperitifs or in mixed drinks