have vs instigate

have is a noun but instigate is not a noun.

Word	Noun	Adjective	Verb	Adverb
have	Yes	No	Yes	No
instigate	No	No	Yes	No

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

Other hyponyms of have include decide, persuade, bring, solicit, encourage, let, lead, inspire, prompt, suborn, compel, obligate, oblige.

have (noun)	instigate (noun)
a person who possesses great material wealth

have (verb)	instigate (verb)
cause to be born	provoke or stir up
suffer from; be ill with	serve as the inciting cause of
undergo (as of injuries and illnesses)
cause to move; cause to be in a certain position or condition
undergo
cause to do; cause to act in a specified manner
serve oneself to, or consume regularly
have sex with; archaic use
organize or be responsible for
go through (mental or physical states or experiences)
have or possess, either in a concrete or an abstract sense
achieve a point or goal
get something; come into possession of
have ownership or possession of
receive willingly something given or offered
have a personal or business relationship with someone
have as a feature
be confronted with