haziness vs vapourousness

haziness and vapourousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
haziness	Yes	No	No	No
vapourousness	Yes	No	No	No

As nouns, haziness and vapourousness are synonyms defined as:

haziness and vapourousness: cloudiness resulting from haze or mist or vapor

Other synonyms of haziness include mistiness, steaminess, vaporousness.

haziness (noun)	vapourousness (noun)
cloudiness resulting from haze or mist or vapor	cloudiness resulting from haze or mist or vapor
vagueness attributable to being not clearly defined