shrivel up vs mummify

shrivel up and mummify both are verbs.

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

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

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

shrivel up (verb)	mummify (verb)
wither, as with a loss of moisture	dry up and shrivel due to complete loss of moisture
	remove the organs and dry out (a dead body) in order to preserve it
	preserve while making lifeless