evaporation vs clouding

evaporation and clouding both are nouns.

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

As nouns, clouding is a hyponym of evaporation; that is, clouding is a word with a more specific, narrower meaning than evaporation:

Other hyponyms of evaporation include boiling, clouding up, smoke, smoking.

evaporation (noun)	clouding (noun)
the process of becoming a vapor	the process whereby water particles become visible in the sky
the process of extracting moisture