dashing hopes vs failure

dashing hopes and failure both are nouns.

Word	Noun	Adjective	Verb	Adverb
dashing hopes	Yes	No	No	No
failure	Yes	No	No	No

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

dashing hopes (noun)	failure (noun)
an act (or failure to act) that disappoints someone	an act that fails
	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