hold up vs be

hold up and be both are verbs.

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

hold up (verb)	be (verb)
cause to be slowed down or delayed	spend or use time
be the physical support of; carry the weight of	work in a specific place, with a specific subject, or in a specific function
hold up something as an example; hold up one's achievements for admiration	have an existence, be extant
rob at gunpoint or by means of some other threat	have life, be alive
continue to live and avoid dying	form or compose
resist or withstand wear, criticism, etc.	have the quality of being; (copula, used with an adjective or a predicate noun)
resist or confront with resistance	occupy a certain position or area; be somewhere
	be identical to; be someone or something
	be identical or equivalent to
	represent, as of a character on stage
	be priced at
	to remain unmolested, undisturbed, or uninterrupted -- used only in infinitive form