interruption vs holdup

interruption and holdup both are nouns.

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

As nouns, holdup is a hypernym of interruption; that is, holdup is a word with a broader meaning than interruption:

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

Other hypernyms of interruption include delay.

interruption (noun)	holdup (noun)
an act of delaying or interrupting the continuity	robbery at gunpoint
some abrupt occurrence that interrupts an ongoing activity	the act of delaying; inactivity resulting in something being put off until a later time
a time interval during which there is a temporary cessation of something