beauteousness vs beauty

beauteousness and beauty both are nouns.

Word	Noun	Adjective	Verb	Adverb
beauteousness	Yes	No	No	No
beauty	Yes	No	No	No

As nouns, beauty is a hypernym of beauteousness; that is, beauty is a word with a broader meaning than beauteousness:

beauteousness (noun)	beauty (noun)
the quality of being good looking and attractive	the qualities that give pleasure to the senses
	an outstanding example of its kind
	a very attractive or seductive looking woman