hold up vs withstand

hold up and withstand both are verbs.

Word	Noun	Adjective	Verb	Adverb
hold up	No	No	Yes	No
withstand	No	No	Yes	No

As verbs, hold up and withstand are synonyms defined as:

Other synonyms of hold up include defy, hold.

As verbs, withstand is a hypernym of hold up; that is, withstand is a word with a broader meaning than hold up:

Other hypernyms of hold up include hold out, resist, stand firm.

hold up (verb)	withstand (verb)
cause to be slowed down or delayed	stand up or offer resistance to somebody or something
be the physical support of; carry the weight of	resist or confront with resistance
hold up something as an example; hold up one's achievements for admiration
rob at gunpoint or by means of some other threat
continue to live and avoid dying
resist or withstand wear, criticism, etc.
resist or confront with resistance