weakly interacting massive particle vs natural philosophy

weakly interacting massive particle and natural philosophy both are nouns.

Word	Noun	Adjective	Verb	Adverb
weakly interacting massive particle	Yes	No	No	No
natural philosophy	Yes	No	No	No

weakly interacting massive particle (noun)	natural philosophy (noun)
a hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation; postulated as a constituent of the dark matter of the universe	the science of matter and energy and their interactions