suck vs sop up

suck is a noun but sop up is not a noun.

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

As verbs, suck and sop up are synonyms defined as:

Other synonyms of suck include absorb, draw, imbibe, soak up, suck up, take in, take up.

suck (noun)	sop up (noun)
the act of sucking

suck (verb)	sop up (verb)
give suck to	take up as if with a sponge
draw into the mouth by creating a practical vacuum in the mouth	take in, also metaphorically
take in, also metaphorically
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.