spring-cleaning vs cleanup

spring-cleaning and cleanup both are nouns.

Word	Noun	Adjective	Verb	Adverb
spring-cleaning	Yes	No	No	No
cleanup	Yes	No	No	No

As nouns, cleanup is a hypernym of spring-cleaning; that is, cleanup is a word with a broader meaning than spring-cleaning:

spring-cleaning: the activity of cleaning a house thoroughly at the end of winter
cleanup: the act of making something clean

Other hypernyms of spring-cleaning include cleaning, cleansing.

spring-cleaning (noun)	cleanup (noun)
the activity of cleaning a house thoroughly at the end of winter	the act of making something clean
	(baseball) the fourth position in the batting order (usually filled by the best batter on the team)
	a very large profit