absorb vs suck in

absorb and suck in both are verbs.

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

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

Other hyponyms of absorb include suck.

absorb (verb)	suck in (verb)
cause to become one with	take up as if with a sponge
take up mentally	draw in as if by suction
consume all of one's attention or time	attract by using an inexorable force, inducement, etc.
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