tearaway vs swashbuckler

tearaway and swashbuckler both are nouns.

Word	Noun	Adjective	Verb	Adverb
tearaway	Yes	Yes	No	No
swashbuckler	Yes	No	No	No

As nouns, swashbuckler is a hypernym of tearaway; that is, swashbuckler is a word with a broader meaning than tearaway:

Other hypernyms of tearaway include daredevil, harum-scarum, hothead, lunatic, madcap.

tearaway (noun)	swashbuckler (noun)
a reckless and impetuous person	a reckless impetuous irresponsible person

tearaway (adjective)	swashbuckler (adjective)
characterized by undue haste and lack of thought or deliberation