sorption vs adsorption

sorption and adsorption both are nouns.

Word	Noun	Adjective	Verb	Adverb
sorption	Yes	No	No	No
adsorption	Yes	No	No	No

As nouns, adsorption is a hyponym of sorption; that is, adsorption is a word with a more specific, narrower meaning than sorption:

sorption: the process in which one substance takes up or holds another (by either absorption or adsorption)
adsorption: the accumulation of molecules of a gas to form a thin film on the surface of a solid

Other hyponyms of sorption include absorption, soaking up, surface assimilation.

sorption (noun)	adsorption (noun)
the process in which one substance takes up or holds another (by either absorption or adsorption)	the accumulation of molecules of a gas to form a thin film on the surface of a solid