word vs negotiation

word and negotiation both are nouns.

Word	Noun	Adjective	Verb	Adverb
word	Yes	No	Yes	No
negotiation	Yes	No	No	No

As nouns, negotiation is a hyponym of word; that is, negotiation is a word with a more specific, narrower meaning than word:

word (noun)	negotiation (noun)
a unit of language that native speakers can identify	the activity or business of negotiating an agreement; coming to terms
a promise	a discussion intended to produce an agreement
information about recent and important events
a brief statement
an exchange of views on some topic
a secret word or phrase known only to a restricted group
a verbal command for action
a string of bits stored in computer memory

word (verb)	negotiation (verb)
put into words or an expression