natural philosophy vs demagnetise

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

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

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

natural philosophy (verb)	demagnetise (verb)
	make nonmagnetic; take away the magnetic properties (of)
	erase (a magnetic storage device)