contend vs gainsay

contend and gainsay both are verbs.

Word	Noun	Adjective	Verb	Adverb
contend	No	No	Yes	No
gainsay	No	No	Yes	No

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

Other hyponyms of contend include challenge, dispute.

contend (verb)	gainsay (verb)
to make the subject of dispute, contention, or litigation	take exception to
have an argument about something
maintain or assert
compete for something; engage in a contest; measure oneself against others
be engaged in a fight; carry on a fight
succeed in doing, achieving, or producing (something) with the limited or inadequate means available