Wall Street vs Wall St.

Wall Street and Wall St. both are nouns.

Word	Noun	Adjective	Verb	Adverb
Wall Street	Yes	No	No	No
Wall St.	Yes	No	No	No

As nouns, Wall Street and Wall St. are synonyms defined as:

Wall Street and Wall St.: a street in lower Manhattan where the New York Stock Exchange is located; symbol of American finance

Wall Street (noun)	Wall St. (noun)
used to allude to the securities industry of the United States	a street in lower Manhattan where the New York Stock Exchange is located; symbol of American finance
a street in lower Manhattan where the New York Stock Exchange is located; symbol of American finance