close call vs accomplishment

close call and accomplishment both are nouns.

Word	Noun	Adjective	Verb	Adverb
close call	Yes	No	No	No
accomplishment	Yes	No	No	No

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

Other hypernyms of close call include achievement.

close call (noun)	accomplishment (noun)
something achieved (or escaped) by a narrow margin	the action of accomplishing something
	an ability that has been acquired by training