boldness vs fearlessness

boldness and fearlessness both are nouns.

Word	Noun	Adjective	Verb	Adverb
boldness	Yes	No	No	No
fearlessness	Yes	No	No	No

As nouns, fearlessness is a hypernym of boldness; that is, fearlessness is a word with a broader meaning than boldness:

boldness: the trait of being willing to undertake things that involve risk or danger
fearlessness: the trait of feeling no fear

boldness (noun)	fearlessness (noun)
the trait of being willing to undertake things that involve risk or danger	the trait of feeling no fear
the quality of standing out strongly and distinctly	feeling no fear
impudent aggressiveness