hothead vs swashbuckler

hothead and swashbuckler both are nouns.

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

As nouns, hothead and swashbuckler are synonyms defined as:

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

hothead (noun)	swashbuckler (noun)
a reckless impetuous irresponsible person	a reckless impetuous irresponsible person
a belligerent grouch