ended vs terminated

ended and terminated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
ended	No	Yes	No	No
terminated	No	Yes	No	No

As adjectives, ended and terminated are synonyms defined as:

Other synonyms of ended include all over, complete, concluded, over.

ended (adjective)	terminated (adjective)
having come or been brought to a conclusion	(of e.g. a contract or term of office) having come to an end
	having come or been brought to a conclusion