greed vs avarice

greed and avarice both are nouns.

Word	Noun	Adjective	Verb	Adverb
greed	Yes	No	No	No
avarice	Yes	No	No	No

As nouns, greed and avarice are synonyms defined as:

greed and avarice: reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins)

Other synonyms of greed include avaritia, covetousness, rapacity.

As nouns, avarice is a hyponym of greed; that is, avarice is a word with a more specific, narrower meaning than greed:

greed: excessive desire to acquire or possess more (especially more material wealth) than one needs or deserves
avarice: extreme greed for material wealth

Other hyponyms of greed include avariciousness, covetousness, cupidity, possessiveness, acquisitiveness.

greed (noun)	avarice (noun)
reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins)	reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins)
excessive desire to acquire or possess more (especially more material wealth) than one needs or deserves	extreme greed for material wealth