dehydrate vs dry up

dehydrate and dry up both are verbs.

Word	Noun	Adjective	Verb	Adverb
dehydrate	No	No	Yes	No
dry up	No	No	Yes	No

As verbs, dehydrate and dry up are synonyms defined as:

Other synonyms of dehydrate include desiccate, exsiccate.

dehydrate (verb)	dry up (verb)
lose water or moisture	lose water or moisture
remove water from	dry up and shrivel due to complete loss of moisture
preserve by removing all water and liquids from