establish vs negate

establish and negate both are verbs.

Word	Noun	Adjective	Verb	Adverb
establish	No	No	Yes	No
negate	No	No	Yes	No

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

establish: establish the validity of something, as by an example, explanation or experiment
negate: prove negative; show to be false

Other hyponyms of establish include prove oneself, prove, contradict, stultify.

establish (verb)	negate (verb)
establish the validity of something, as by an example, explanation or experiment	make ineffective by counterbalancing the effect of
institute, enact, or establish	prove negative; show to be false
use as a basis for; found on	deny the truth of
place	be in contradiction with
set up or lay the groundwork for
bring about
build or establish something abstract
set up or found