leaching vs natural process

leaching and natural process both are nouns.

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

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

leaching: the process of leaching
natural process: a process existing in or produced by nature (rather than by the intent of human beings)

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

leaching (noun)	natural process (noun)
the process of leaching	a process existing in or produced by nature (rather than by the intent of human beings)