physics vs fundamental particle

physics and fundamental particle both are nouns.

Word	Noun	Adjective	Verb	Adverb
physics	Yes	No	No	No
fundamental particle	Yes	No	No	No

physics (noun)	fundamental particle (noun)
the science of matter and energy and their interactions	(physics) a particle that is less complex than an atom; regarded as constituents of all matter
the physical properties, phenomena, and laws of something