dehydration vs evaporation

dehydration and evaporation both are nouns.

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

As nouns, dehydration and evaporation are synonyms defined as:

Other synonyms of dehydration include desiccation, drying up.

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