Park Avenue vs Park Ave.

Park Avenue and Park Ave. both are nouns.

Word	Noun	Adjective	Verb	Adverb
Park Avenue	Yes	No	No	No
Park Ave.	Yes	No	No	No

As nouns, Park Avenue and Park Ave. are synonyms defined as:

Park Avenue and Park Ave.: a fashionable residential street in New York City

Park Avenue (noun)	Park Ave. (noun)
a fashionable residential street in New York City	a fashionable residential street in New York City