natural philosophy vs soliton

natural philosophy and soliton both are nouns.

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

natural philosophy (noun)	soliton (noun)
the science of matter and energy and their interactions	(physics) a quantum of energy or quasiparticle that can be propagated as a traveling wave in nonlinear systems and is neither preceded nor followed by another such disturbance; does not obey the superposition principle and does not dissipate