absorb vs suck

absorb is not a noun while suck is a noun.

Word	Noun	Adjective	Verb	Adverb
absorb	No	No	Yes	No
suck	Yes	No	Yes	No

As verbs, absorb and suck are synonyms defined as:

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

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

Other hyponyms of absorb include suck in.

absorb (noun)	suck (noun)
	the act of sucking

absorb (verb)	suck (verb)
cause to become one with	give suck to
take up mentally	draw into the mouth by creating a practical vacuum in the mouth
consume all of one's attention or time	take in, also metaphorically
devote (oneself) fully to	draw something in by or as if by a vacuum
take in, also metaphorically	provide sexual gratification through oral stimulation
become imbued	be inadequate or objectionable
assimilate or take in	attract by using an inexorable force, inducement, etc.
take up, as of debts or payments
suck or take up or in