physics vs nuclear

physics is a noun but nuclear is not a noun.

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

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

physics (adjective)	nuclear (adjective)
	(weapons) deriving destructive energy from the release of atomic energy
	of or relating to or constituting the nucleus of an atom
	of or relating to or constituting the nucleus of a cell
	constituting or like a nucleus