rob vs hold up

rob and hold up both are verbs.

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

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

Other hyponyms of rob include stick up, pick.

rob (verb)	hold up (verb)
take something away by force or without the consent of the owner	cause to be slowed down or delayed
rip off; ask an unreasonable price	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