natural philosophy vs transient

natural philosophy and transient both are nouns.

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

natural philosophy (noun)	transient (noun)
the science of matter and energy and their interactions	(physics) a short-lived oscillation in a system caused by a sudden change of voltage or current or load
	one who stays for only a short time

natural philosophy (adjective)	transient (adjective)
	of a mental act; causing effects outside the mind
	lasting a very short time