relativistic vs physics

relativistic is not a noun while physics is a noun.

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

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

relativistic (adjective)	physics (adjective)
relating or subject to the special or the general theory of relativity
of or relating to the philosophical doctrine of relativism