lunatic vs daredevil

lunatic and daredevil both are nouns.

Word	Noun	Adjective	Verb	Adverb
lunatic	Yes	Yes	No	No
daredevil	Yes	Yes	No	No

As nouns, lunatic and daredevil are synonyms defined as:

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

lunatic (noun)	daredevil (noun)
an insane person	a reckless impetuous irresponsible person
a reckless impetuous irresponsible person

lunatic (adjective)	daredevil (adjective)
insane and believed to be affected by the phases of the moon	presumptuously daring