detain vs hold up

detain and hold up both are verbs.

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

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

Other synonyms of detain include delay.

detain (verb)	hold up (verb)
cause to be slowed down or delayed	cause to be slowed down or delayed
stop or halt	be the physical support of; carry the weight of
deprive of freedom; take into confinement	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