repulsive vs natural philosophy

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

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

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

repulsive (adjective)	natural philosophy (adjective)
possessing the ability to repel
offensive to the mind
so extremely ugly as to be terrifying