volatile vs vapourific

volatile is a noun but vapourific is not a noun.

Word	Noun	Adjective	Verb	Adverb
volatile	Yes	Yes	No	No
vapourific	No	Yes	No	No

volatile (noun)	vapourific (noun)
a volatile substance; a substance that changes readily from solid or liquid to a vapor

volatile (adjective)	vapourific (adjective)
evaporating readily at normal temperatures and pressures	resembling or characteristic of vapor
tending to vary often or widely	(used of substances) capable of being volatilized
marked by erratic changeableness in affections or attachments
liable to lead to sudden change or violence