masterstroke vs accomplishment

masterstroke and accomplishment both are nouns.

Word	Noun	Adjective	Verb	Adverb
masterstroke	Yes	No	No	No
accomplishment	Yes	No	No	No

As nouns, accomplishment is a hypernym of masterstroke; that is, accomplishment is a word with a broader meaning than masterstroke:

Other hypernyms of masterstroke include achievement.

masterstroke (noun)	accomplishment (noun)
an achievement demonstrating great skill or mastery	the action of accomplishing something
	an ability that has been acquired by training