natural philosophy vs noncritical

natural philosophy is a noun but noncritical is not a noun.

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

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

natural philosophy (adjective)	noncritical (adjective)
	not in a state of crisis or emergency
	not critical; not at a point of abrupt change
	marked by disregard for critical standards or procedures