solicitation vs urgency

solicitation and urgency both are nouns.

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

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

Other hyponyms of solicitation include beggary, begging, mendicancy, touch, importunity, urging.

solicitation (noun)	urgency (noun)
the act of enticing a person to do something wrong (as an offer of sex in return for money)	pressing importance requiring speedy action
an entreaty addressed to someone of superior status	insistent solicitation and entreaty
request for a sum of money	the state of being urgent; an earnest and insistent necessity
	an urgent situation calling for prompt action