negociate vs broker

negociate is not a noun while broker is a noun.

Word	Noun	Adjective	Verb	Adverb
negociate	No	No	Yes	No
broker	Yes	No	Yes	No

As verbs, broker is a hyponym of negociate; that is, broker is a word with a more specific, narrower meaning than negociate:

Other hyponyms of negociate include arbitrate, intercede, intermediate, liaise, mediate, renegociate, renegotiate, bargain, dicker.

negociate (noun)	broker (noun)
	a businessman who buys or sells for another in exchange for a commission

negociate (verb)	broker (verb)
discuss the terms of an arrangement	act as a broker
confer with another in order to come to terms or reach an agreement
succeed in passing through, around, or over
transfer by endorsement to another in return for value received
sell or discount
be successful; achieve a goal