vapourific vs vapourous

vapourific and vapourous both are adjectives.

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

As adjectives, vapourific and vapourous are synonyms defined as:

Other synonyms of vapourific include vaporific, vaporish, vaporous, vapourish.

vapourific (adjective)	vapourous (adjective)
resembling or characteristic of vapor	filled with vapor
(used of substances) capable of being volatilized	resembling or characteristic of vapor
	so thin as to transmit light