hold up vs chock

hold up is not a noun while chock is a noun.

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

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

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

hold up (noun)	chock (noun)
	a block of wood used to prevent the sliding or rolling of a heavy object

hold up (verb)	chock (verb)
cause to be slowed down or delayed	support on chocks
be the physical support of; carry the weight of	secure with chocks
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

hold up (adverb)	chock (adverb)
	as completely as possible