conservation vs natural philosophy

conservation and natural philosophy both are nouns.

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

conservation (noun)	natural philosophy (noun)
the preservation and careful management of the environment and of natural resources	the science of matter and energy and their interactions
(physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations
an occurrence of improvement by virtue of preventing loss or injury or other change