unsuccessful person vs failure

unsuccessful person and failure both are nouns.

Word	Noun	Adjective	Verb	Adverb
unsuccessful person	Yes	No	No	No
failure	Yes	No	No	No

As nouns, unsuccessful person and failure are synonyms defined as:

unsuccessful person and failure: a person with a record of failing; someone who loses consistently

Other synonyms of unsuccessful person include loser, nonstarter.

unsuccessful person (noun)	failure (noun)
a person with a record of failing; someone who loses consistently	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