demagnetise vs physics

demagnetise is not a noun while physics is a noun.

Word	Noun	Adjective	Verb	Adverb
demagnetise	No	No	Yes	No
physics	Yes	No	No	No

demagnetise (noun)	physics (noun)
	the science of matter and energy and their interactions
	the physical properties, phenomena, and laws of something

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