aeration vs natural process

aeration and natural process both are nouns.

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

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

aeration: the process of exposing to air (so as to purify)
natural process: a process existing in or produced by nature (rather than by the intent of human beings)

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

aeration (noun)	natural process (noun)
the act of charging a liquid with a gas making it effervescent	a process existing in or produced by nature (rather than by the intent of human beings)
the process of exposing to air (so as to purify)