absorbent material vs sorbent

absorbent material and sorbent both are nouns.

Word	Noun	Adjective	Verb	Adverb
absorbent material	Yes	No	No	No
sorbent	Yes	No	No	No

As nouns, sorbent is a hypernym of absorbent material; that is, sorbent is a word with a broader meaning than absorbent material:

absorbent material: a material having capacity or tendency to absorb another substance
sorbent: a material that sorbs another substance; i.e. that has the capacity or tendency to take it up by either absorption or adsorption

Other hypernyms of absorbent material include sorbent material.

absorbent material (noun)	sorbent (noun)
a material having capacity or tendency to absorb another substance	a material that sorbs another substance; i.e. that has the capacity or tendency to take it up by either absorption or adsorption