insistence vs urgency

insistence and urgency both are nouns.

Word	Noun	Adjective	Verb	Adverb
insistence	Yes	No	No	No
urgency	Yes	No	No	No

As nouns, urgency is a hypernym of insistence; that is, urgency is a word with a broader meaning than insistence:

insistence (noun)	urgency (noun)
the act of insisting on something	pressing importance requiring speedy action
continual and persistent demands	insistent solicitation and entreaty
the state of demanding notice or attention	the state of being urgent; an earnest and insistent necessity
	an urgent situation calling for prompt action