shamelessness vs hardiness

shamelessness and hardiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
shamelessness	Yes	No	No	No
hardiness	Yes	No	No	No

As nouns, hardiness is a hypernym of shamelessness; that is, hardiness is a word with a broader meaning than shamelessness:

shamelessness: behavior marked by a bold defiance of the proprieties and lack of shame
hardiness: the trait of being willing to undertake things that involve risk or danger

Other hypernyms of shamelessness include boldness, daring, hardihood.

shamelessness (noun)	hardiness (noun)
behavior marked by a bold defiance of the proprieties and lack of shame	the property of being strong and healthy in constitution
	the trait of being willing to undertake things that involve risk or danger