contend vs fistfight

contend is not a noun while fistfight is a noun.

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

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

contend (noun)	fistfight (noun)
	a fight with bare fists

contend (verb)	fistfight (verb)
to make the subject of dispute, contention, or litigation	fight with the fists
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