lustiness vs hardiness

lustiness and hardiness both are nouns.

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

As nouns, lustiness and hardiness are synonyms defined as:

lustiness and hardiness: the property of being strong and healthy in constitution

Other synonyms of lustiness include robustness.

lustiness (noun)	hardiness (noun)
the property of being strong and healthy in constitution	the property of being strong and healthy in constitution
	the trait of being willing to undertake things that involve risk or danger