pencil vs natural philosophy

pencil and natural philosophy both are nouns.

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

pencil (noun)	natural philosophy (noun)
a thin cylindrical pointed writing implement; a rod of marking substance encased in wood	the science of matter and energy and their interactions
a cosmetic in a long thin stick; designed to be applied to a particular part of the face
a figure formed by a set of straight lines or light rays meeting at a point
graphite (or a similar substance) used in such a way as to be a medium of communication

pencil (verb)	natural philosophy (verb)
write, draw, or trace with a pencil