relativistic mass vs natural philosophy

relativistic mass and natural philosophy both are nouns.

Word	Noun	Adjective	Verb	Adverb
relativistic mass	Yes	No	No	No
natural philosophy	Yes	No	No	No

relativistic mass (noun)	natural philosophy (noun)
(physics) the mass of a body in motion relative to the observer: it is equal to the rest mass multiplied by a factor that is greater than 1 and that increases as the magnitude of the velocity increases	the science of matter and energy and their interactions