prettiness vs beauty

prettiness and beauty both are nouns.

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

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

prettiness: the quality of being appealing in a delicate or graceful way (of a girl or young woman)
beauty: the qualities that give pleasure to the senses

prettiness (noun)	beauty (noun)
the quality of being appealing in a delicate or graceful way (of a girl or young woman)	the qualities that give pleasure to the senses
	an outstanding example of its kind
	a very attractive or seductive looking woman