brokerage vs brokerage firm

brokerage and brokerage firm both are nouns.

Word	Noun	Adjective	Verb	Adverb
brokerage	Yes	No	No	No
brokerage firm	Yes	No	No	No

As nouns, brokerage and brokerage firm are synonyms defined as:

brokerage and brokerage firm: a stock broker's business; charges a fee to act as intermediary between buyer and seller

Other synonyms of brokerage include securities firm.

brokerage (noun)	brokerage firm (noun)
place where a broker conducts his business	a stock broker's business; charges a fee to act as intermediary between buyer and seller
a stock broker's business; charges a fee to act as intermediary between buyer and seller
the business of a broker; charges a fee to arrange a contract between two parties