purging vs cleanup

purging and cleanup both are nouns.

Word	Noun	Adjective	Verb	Adverb
purging	Yes	Yes	No	No
cleanup	Yes	No	No	No

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

purging: an act of removing by cleansing; ridding of sediment or other undesired elements
cleanup: the act of making something clean

Other hypernyms of purging include cleaning, cleansing.

purging (noun)	cleanup (noun)
an act of removing by cleansing; ridding of sediment or other undesired elements	the act of making something clean
the act of clearing yourself (or another) from some stigma or charge	(baseball) the fourth position in the batting order (usually filled by the best batter on the team)
	a very large profit

purging (adjective)	cleanup (adjective)
serving to purge or rid of sin