get back vs contend

get back and contend both are verbs.

Word	Noun	Adjective	Verb	Adverb
get back	No	No	Yes	No
contend	No	No	Yes	No

As verbs, contend is a hypernym of get back; that is, contend is a word with a broader meaning than get back:

Other hypernyms of get back include fight, struggle.

get back (verb)	contend (verb)
take revenge or even out a score	to make the subject of dispute, contention, or litigation
recover something or somebody that appeared to be lost	have an argument about something
get one's revenge for a wrong or an injury	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