contend vs get back

contend and get back both are verbs.

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

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

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