endpoint vs end point

endpoint and end point both are nouns.

Word	Noun	Adjective	Verb	Adverb
endpoint	Yes	No	No	No
end point	Yes	No	No	No

As nouns, endpoint and end point are synonyms defined as:

Other synonyms of endpoint include termination, terminus.

endpoint (noun)	end point (noun)
a place where something ends or is complete	a place where something ends or is complete
	the final point in a process