transpiration vs natural action

transpiration and natural action both are nouns.

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

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

transpiration: the passage of gases through fine tubes because of differences in pressure or temperature
natural action: a process existing in or produced by nature (rather than by the intent of human beings)

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

transpiration (noun)	natural action (noun)
the emission of water vapor from the leaves of plants	a process existing in or produced by nature (rather than by the intent of human beings)
the passage of gases through fine tubes because of differences in pressure or temperature
the process of giving off or exhaling water vapor through the skin or mucous membranes