clouding vs vapour

clouding and vapour both are nouns.

Word	Noun	Adjective	Verb	Adverb
clouding	Yes	No	No	No
vapour	Yes	No	No	No

As nouns, vapour is a hypernym of clouding; that is, vapour is a word with a broader meaning than clouding:

Other hypernyms of clouding include evaporation, vapor, vaporisation, vaporization.

clouding (noun)	vapour (noun)
the process whereby water particles become visible in the sky	the process of becoming a vapor
	a visible suspension in the air of particles of some substance