leach vs natural action

leach and natural action both are nouns.

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

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

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

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

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

leach (verb)	natural action (verb)
remove substances from by a percolating liquid
permeate or penetrate gradually
cause (a liquid) to leach or percolate