oxygenation vs natural process

oxygenation and natural process both are nouns.

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

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

oxygenation: the process of providing or combining or treating with oxygen
natural process: a process existing in or produced by nature (rather than by the intent of human beings)

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

oxygenation (noun)	natural process (noun)
the process of providing or combining or treating with oxygen	a process existing in or produced by nature (rather than by the intent of human beings)