Planck's law vs physics

Planck's law and physics both are nouns.

Word	Noun	Adjective	Verb	Adverb
Planck's law	Yes	No	No	No
physics	Yes	No	No	No

Planck's law (noun)	physics (noun)
(physics) the basis of quantum theory; the energy of electromagnetic waves is contained in indivisible quanta that have to be radiated or absorbed as a whole; the magnitude is proportional to frequency where the constant of proportionality is given by Planck's constant	the science of matter and energy and their interactions
	the physical properties, phenomena, and laws of something