shrivel vs dry up

shrivel and dry up both are verbs.

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

As verbs, dry up is a hyponym of shrivel; that is, dry up is a word with a more specific, narrower meaning than shrivel:

Other hyponyms of shrivel include atrophy, blast, die back, die down, mummify.

shrivel (verb)	dry up (verb)
wither, as with a loss of moisture	lose water or moisture
decrease in size, range, or extent	dry up and shrivel due to complete loss of moisture