hydrate vs furnish

hydrate is a noun but furnish is not a noun.

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

As verbs, furnish is a hypernym of hydrate; that is, furnish is a word with a broader meaning than hydrate:

Other hypernyms of hydrate include offer, provide, render, supply.

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

hydrate (verb)	furnish (verb)
cause to be hydrated; add water or moisture to	give something useful or necessary to
become hydrated and combine with water	provide or equip with furniture
supply water or liquid to in order to maintain a healthy balance