evaporation vs dehydration

evaporation and dehydration both are nouns.

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

As nouns, evaporation and dehydration are synonyms defined as:

Other synonyms of evaporation include desiccation, drying up.

evaporation (noun)	dehydration (noun)
the process of becoming a vapor	the process of extracting moisture
the process of extracting moisture	dryness resulting from the removal of water
	depletion of bodily fluids