terminated vs ended

terminated and ended both are adjectives.

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

As adjectives, terminated and ended are synonyms defined as:

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

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