clouding up vs vaporization

clouding up and vaporization both are nouns.

Word	Noun	Adjective	Verb	Adverb
clouding up	Yes	No	No	No
vaporization	Yes	No	No	No

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

Other hypernyms of clouding up include evaporation, vapor, vaporisation, vapour.

clouding up (noun)	vaporization (noun)
the process whereby water particles become visible in the sky	annihilation by vaporizing something
	the process of becoming a vapor