delay vs interruption

delay and interruption both are nouns.

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

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

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

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

delay: time during which some action is awaited
interruption: a time interval during which there is a temporary cessation of something

Other hypernyms of delay include break, intermission, pause, suspension.

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

delay (verb)	interruption (verb)
cause to be slowed down or delayed
stop or halt
slow the growth or development of
act later than planned, scheduled, or required