prodigality vs lavishness

prodigality and lavishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
prodigality	Yes	No	No	No
lavishness	Yes	No	No	No

As nouns, prodigality and lavishness are synonyms defined as:

Other synonyms of prodigality include extravagance, high life, highlife.

prodigality (noun)	lavishness (noun)
the activity of excessive spending	the activity of excessive spending
the trait of spending extravagantly	the quality possessed by something that is excessively expensive