urgency vs importance

urgency and importance both are nouns.

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

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

urgency (noun)	importance (noun)
pressing importance requiring speedy action	the quality of being important and worthy of note
insistent solicitation and entreaty	a prominent status
the state of being urgent; an earnest and insistent necessity
an urgent situation calling for prompt action