natural philosophy vs decompose

natural philosophy is a noun but decompose is not a noun.

Word	Noun	Adjective	Verb	Adverb
natural philosophy	Yes	No	No	No
decompose	No	No	Yes	No

natural philosophy (noun)	decompose (noun)
the science of matter and energy and their interactions

natural philosophy (verb)	decompose (verb)
	separate (substances) into constituent elements or parts
	break down
	lose a stored charge, magnetic flux, or current