identical vs natural philosophy

identical is not a noun while natural philosophy is a noun.

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

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

identical (adjective)	natural philosophy (adjective)
(of twins) derived from a single egg or ovum
coinciding exactly when superimposed
having properties with uniform values along all axes
exactly alike; incapable of being perceived as different
being the exact same one; not any other: