vicinity vs neighbourhood

vicinity and neighbourhood both are nouns.

Word	Noun	Adjective	Verb	Adverb
vicinity	Yes	No	No	No
neighbourhood	Yes	No	No	No

As nouns, vicinity and neighbourhood are synonyms defined as:

Other synonyms of vicinity include locality, neck of the woods, neighborhood.

vicinity (noun)	neighbourhood (noun)
a surrounding or nearby region	people living near one another
	a surrounding or nearby region