urgency vs sharpness

urgency and sharpness both are nouns.

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

As nouns, sharpness is a hyponym of urgency; that is, sharpness is a word with a more specific, narrower meaning than urgency:

Other hyponyms of urgency include edge, imperativeness, instancy.

urgency (noun)	sharpness (noun)
pressing importance requiring speedy action	harshness of manner
insistent solicitation and entreaty	thinness of edge or fineness of point
the state of being urgent; an earnest and insistent necessity	a strong odor or taste property
an urgent situation calling for prompt action	the quality of being sharp and clear
	the attribute of urgency in tone of voice
	the quality of being keenly and painfully felt
	a quick and penetrating intelligence