foolhardiness vs recklessness

foolhardiness and recklessness both are nouns.

Word	Noun	Adjective	Verb	Adverb
foolhardiness	Yes	No	No	No
recklessness	Yes	No	No	No

As nouns, foolhardiness and recklessness are synonyms defined as:

foolhardiness and recklessness: the trait of giving little thought to danger

Other synonyms of foolhardiness include rashness.

foolhardiness (noun)	recklessness (noun)
the trait of giving little thought to danger	the trait of giving little thought to danger