desorption vs natural action

desorption and natural action both are nouns.

Word	Noun	Adjective	Verb	Adverb
desorption	Yes	No	No	No
natural action	Yes	No	No	No

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

desorption: changing from an adsorbed state on a surface to a gaseous or liquid state
natural action: a process existing in or produced by nature (rather than by the intent of human beings)

Other hypernyms of desorption include action, activity, natural process.

desorption (noun)	natural action (noun)
changing from an adsorbed state on a surface to a gaseous or liquid state	a process existing in or produced by nature (rather than by the intent of human beings)