relinquishing vs termination

relinquishing and termination both are nouns.

Word	Noun	Adjective	Verb	Adverb
relinquishing	Yes	No	No	No
termination	Yes	No	No	No

As nouns, termination is a hypernym of relinquishing; that is, termination is a word with a broader meaning than relinquishing:

Other hypernyms of relinquishing include conclusion, ending.

relinquishing (noun)	termination (noun)
the act of giving up and abandoning a struggle or task etc.	the act of ending something
a verbal act of renouncing a claim or right or position etc.	the end of a word (a suffix or inflectional ending or final morpheme)
	something that results
	a place where something ends or is complete
	a coming to an end of a contract period