vapourous vs vapourific

vapourous and vapourific both are adjectives.

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

As adjectives, vapourous and vapourific are synonyms defined as:

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

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