interruption vs happening

interruption and happening both are nouns.

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

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

Other hypernyms of interruption include natural event, occurrence, occurrent.

interruption (noun)	happening (noun)
an act of delaying or interrupting the continuity	an event that happens
some abrupt occurrence that interrupts an ongoing activity
a time interval during which there is a temporary cessation of something