graduation vs mop up

graduation and mop up both are nouns.

Word	Noun	Adjective	Verb	Adverb
graduation	Yes	No	No	No
mop up	Yes	No	Yes	No

As nouns, mop up is a hypernym of graduation; that is, mop up is a word with a broader meaning than graduation:

Other hypernyms of graduation include closing, completion, culmination, windup.

graduation (noun)	mop up (noun)
the act of arranging in grades	a concluding action
the successful completion of a program of study
a line (as on a vessel or ruler) that marks a measurement
an academic exercise in which diplomas are conferred

graduation (verb)	mop up (verb)
	finish a task completely
	defeat thoroughly
	to wash or wipe with or as if with a mop