artificial vs celluloid

artificial is not a noun while celluloid is a noun.

Word	Noun	Adjective	Verb	Adverb
artificial	No	Yes	No	No
celluloid	Yes	Yes	No	No

artificial (noun)	celluloid (noun)
	a medium that disseminates moving pictures
	highly flammable substance made from cellulose nitrate and camphor; used in e.g. motion-picture and X-ray film; its use has decreased with the development of nonflammable thermoplastics

artificial (adjective)	celluloid (adjective)
contrived by art rather than nature	artificial as if portrayed in a film
artificially formal
not arising from natural growth or characterized by vital processes