sumptuousness vs luxuriousness

sumptuousness and luxuriousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sumptuousness	Yes	No	No	No
luxuriousness	Yes	No	No	No

As nouns, sumptuousness and luxuriousness are synonyms defined as:

sumptuousness and luxuriousness: wealth as evidenced by sumptuous living

Other synonyms of sumptuousness include luxury, opulence.

sumptuousness (noun)	luxuriousness (noun)
the quality possessed by something that is excessively expensive	wealth as evidenced by sumptuous living
wealth as evidenced by sumptuous living