hydrate vs dehydrate

hydrate is a noun but dehydrate is not a noun.

Word	Noun	Adjective	Verb	Adverb
hydrate	Yes	No	Yes	No
dehydrate	No	No	Yes	No

hydrate (noun)	dehydrate (noun)
any compound that contains water of crystallization

hydrate (verb)	dehydrate (verb)
cause to be hydrated; add water or moisture to	lose water or moisture
become hydrated and combine with water	remove water from
supply water or liquid to in order to maintain a healthy balance	preserve by removing all water and liquids from