discontinue vs run out

discontinue and run out both are verbs.

Word	Noun	Adjective	Verb	Adverb
discontinue	No	No	Yes	No
run out	No	No	Yes	No

As verbs, run out is a hyponym of discontinue; that is, run out is a word with a more specific, narrower meaning than discontinue:

Other hyponyms of discontinue include fizzle, fizzle out, peter out, taper off, leave off, expire.

discontinue (verb)	run out (verb)
prevent completion	use up all one's strength and energy and stop working
put an end to a state or an activity	prove insufficient
come to or be at an end	exhaust the supply of
	become used up; be exhausted
	flow, run or fall out and become lost
	flow off gradually
	leave suddenly and as if in a hurry
	lose validity