dried-up vs withered

dried-up and withered both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dried-up	No	Yes	No	No
withered	No	Yes	No	No

As adjectives, dried-up and withered are synonyms defined as:

dried-up and withered: (used especially of vegetation) having lost all moisture

Other synonyms of dried-up include sear, sere, shriveled, shrivelled.

dried-up (adjective)	withered (adjective)
depleted of water	(used especially of vegetation) having lost all moisture
(used especially of vegetation) having lost all moisture	lean and wrinkled by shrinkage as from age or illness