coherent vs natural philosophy

coherent is not a noun while natural philosophy is a noun.

Word	Noun	Adjective	Verb	Adverb
coherent	No	Yes	No	No
natural philosophy	Yes	No	No	No

coherent (noun)	natural philosophy (noun)
	the science of matter and energy and their interactions

coherent (adjective)	natural philosophy (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