endpoint vs termination

endpoint and termination both are nouns.

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

As nouns, endpoint and termination are synonyms defined as:

Other synonyms of endpoint include end point, terminus.

endpoint (noun)	termination (noun)
a place where something ends or is complete	the act of ending something
	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