desiccate vs dry up

desiccate is an adjective but dry up is not an adjective.

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

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

Other synonyms of desiccate include dehydrate, exsiccate.

desiccate (adjective)	dry up (adjective)
lacking vitality or spirit; lifeless

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