urge vs itch

urge and itch both are nouns.

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

As nouns, urge and itch are synonyms defined as:

urge (noun)	itch (noun)
a strong restless desire	an irritating cutaneous sensation that produces a desire to scratch
an instinctive motive	a strong restless desire
	a contagious skin infection caused by the itch mite; characterized by persistent itching and skin irritation

urge (verb)	itch (verb)
force or impel in an indicated direction	have a strong desire or urge to do something
spur on or encourage especially by cheers and shouts	have or perceive an itch
push for something	scrape or rub as if to relieve itching
	cause to perceive an itch