high life vs prodigality

high life and prodigality both are nouns.

Word	Noun	Adjective	Verb	Adverb
high life	Yes	No	No	No
prodigality	Yes	No	No	No

As nouns, high life and prodigality are synonyms defined as:

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

high life (noun)	prodigality (noun)
the activity of excessive spending	the activity of excessive spending
	the trait of spending extravagantly