mass-energy equivalence vs physics

mass-energy equivalence and physics both are nouns.

Word	Noun	Adjective	Verb	Adverb
mass-energy equivalence	Yes	No	No	No
physics	Yes	No	No	No

mass-energy equivalence (noun)	physics (noun)
(physics) the principle that a measured quantity of mass is equivalent (according to relativity theory) to a measured quantity of energy	the science of matter and energy and their interactions
	the physical properties, phenomena, and laws of something