agent vs brokerage

agent and brokerage both are nouns.

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

agent (noun)	brokerage (noun)
the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause	place where a broker conducts his business
an active and efficient cause; capable of producing a certain effect	a stock broker's business; charges a fee to act as intermediary between buyer and seller
a businessman who buys or sells for another in exchange for a commission	the business of a broker; charges a fee to arrange a contract between two parties
a representative who acts on behalf of other persons or organizations
any agent or representative of a federal agency or bureau
a substance that exerts some force or effect