suck vs mop up

suck and mop up both are nouns.

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

As verbs, mop up is a hyponym of suck; that is, mop up is a word with a more specific, narrower meaning than suck:

Other hyponyms of suck include mop, wipe up, blot, sponge up.

suck (noun)	mop up (noun)
the act of sucking	a concluding action

suck (verb)	mop up (verb)
give suck to	finish a task completely
draw into the mouth by creating a practical vacuum in the mouth	defeat thoroughly
take in, also metaphorically	to wash or wipe with or as if with a mop
draw something in by or as if by a vacuum
provide sexual gratification through oral stimulation
be inadequate or objectionable
attract by using an inexorable force, inducement, etc.