run out vs peter out

run out and peter out both are verbs.

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

As verbs, run out and peter out are synonyms defined as:

run out and peter out: use up all one's strength and energy and stop working

Other synonyms of run out include conk out, poop out, run down.

run out (verb)	peter out (verb)
use up all one's strength and energy and stop working	use up all one's strength and energy and stop working
prove insufficient	end weakly
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