estate agent vs real estate broker

estate agent and real estate broker both are nouns.

Word	Noun	Adjective	Verb	Adverb
estate agent	Yes	No	No	No
real estate broker	Yes	No	No	No

As nouns, estate agent and real estate broker are synonyms defined as:

estate agent and real estate broker: a person who is authorized to act as an agent for the sale of land

Other synonyms of estate agent include house agent, land agent, real estate agent.

estate agent (noun)	real estate broker (noun)
a person who is authorized to act as an agent for the sale of land	a person who is authorized to act as an agent for the sale of land