failure vs insolvency

failure and insolvency both are nouns.

Word	Noun	Adjective	Verb	Adverb
failure	Yes	No	No	No
insolvency	Yes	No	No	No

As nouns, insolvency is a hypernym of failure; that is, insolvency is a word with a broader meaning than failure:

failure (noun)	insolvency (noun)
an act that fails	the lack of financial resources
an unexpected omission
an event that does not accomplish its intended purpose
a person with a record of failing; someone who loses consistently
lack of success
loss of ability to function normally
inability to discharge all your debts as they come due