holdup vs disruption

holdup and disruption both are nouns.

Word	Noun	Adjective	Verb	Adverb
holdup	Yes	No	No	No
disruption	Yes	No	No	No

As nouns, disruption is a hyponym of holdup; that is, disruption is a word with a more specific, narrower meaning than holdup:

holdup: the act of delaying; inactivity resulting in something being put off until a later time
disruption: an act of delaying or interrupting the continuity

holdup (noun)	disruption (noun)
robbery at gunpoint	the act of causing disorder
the act of delaying; inactivity resulting in something being put off until a later time	an act of delaying or interrupting the continuity
	an event that results in a displacement or discontinuity
	a disorderly outburst or tumult