urge vs impulse

urge and impulse both are nouns.

Word	Noun	Adjective	Verb	Adverb
urge	Yes	No	Yes	No
impulse	Yes	No	No	No

As nouns, urge and impulse are synonyms defined as:

urge (noun)	impulse (noun)
a strong restless desire	the act of applying force suddenly
an instinctive motive	an impelling force or strength
	the electrical discharge that travels along a nerve fiber
	(electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
	a sudden desire
	an instinctive motive

urge (verb)	impulse (verb)
force or impel in an indicated direction
spur on or encourage especially by cheers and shouts
push for something