collision vs natural philosophy

collision and natural philosophy both are nouns.

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

collision (noun)	natural philosophy (noun)
a conflict of opposed ideas or attitudes or goals	the science of matter and energy and their interactions
an accident resulting from violent impact of a moving object
(physics) a brief event in which two or more bodies come together