hold up vs prop up

hold up and prop up both are verbs.

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

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

Other hyponyms of hold up include scaffold, block, carry, chock, buoy, buoy up, pole, bracket, underpin, prop, shore, shore up, truss, brace.

hold up (verb)	prop up (verb)
cause to be slowed down or delayed	support by placing against something solid or rigid
be the physical support of; carry the weight of
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