solidifying vs natural process

solidifying and natural process both are nouns.

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

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

solidifying: the process of becoming hard or solid by cooling or drying or crystallization
natural process: a process existing in or produced by nature (rather than by the intent of human beings)

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

solidifying (noun)	natural process (noun)
the process of becoming hard or solid by cooling or drying or crystallization	a process existing in or produced by nature (rather than by the intent of human beings)