belfry vs campanile

belfry and campanile both are nouns.

Word	Noun	Adjective	Verb	Adverb
belfry	Yes	No	No	No
campanile	Yes	No	No	No

As nouns, belfry and campanile are synonyms defined as:

belfry and campanile: a bell tower; usually stands alone unattached to a building

belfry (noun)	campanile (noun)
a room (often at the top of a tower) where bells are hung	a bell tower; usually stands alone unattached to a building
a bell tower; usually stands alone unattached to a building