absorb vs suck up

absorb and suck up both are verbs.

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

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

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

absorb (verb)	suck up (verb)
cause to become one with	try to gain favor by cringing or flattering
take up mentally	take in, also metaphorically
consume all of one's attention or time	ingratiate oneself to; often with insincere behavior
devote (oneself) fully to
take in, also metaphorically
become imbued
assimilate or take in
take up, as of debts or payments
suck or take up or in