natural action vs natural process

natural action and natural process both are nouns.

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

As nouns, natural action and natural process are synonyms defined as:

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

Other synonyms of natural action include action, activity.

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