absorption vs natural philosophy

absorption and natural philosophy both are nouns.

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

absorption (noun)	natural philosophy (noun)
the mental state of being preoccupied by something	the science of matter and energy and their interactions
complete attention; intense mental effort
(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
the process of absorbing nutrients into the body after digestion
(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium
the social process of absorbing one cultural group into harmony with another