coherent vs physics

coherent is not a noun while physics is a noun.

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

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

coherent (adjective)	physics (adjective)
marked by an orderly, logical, and aesthetically consistent relation of parts
(physics) of waves having a constant phase relation
sticking together
capable of thinking and expressing yourself in a clear and consistent manner