sorption vs natural process

sorption and natural process both are nouns.

Word	Noun	Adjective	Verb	Adverb
sorption	Yes	No	No	No
natural process	Yes	No	No	No

As nouns, natural process is a hypernym of sorption; that is, natural process is a word with a broader meaning than sorption:

sorption: the process in which one substance takes up or holds another (by either absorption or adsorption)
natural process: a process existing in or produced by nature (rather than by the intent of human beings)

Other hypernyms of sorption include action, activity, natural action.

sorption (noun)	natural process (noun)
the process in which one substance takes up or holds another (by either absorption or adsorption)	a process existing in or produced by nature (rather than by the intent of human beings)