possessiveness vs greed

possessiveness and greed both are nouns.

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

As nouns, greed is a hypernym of possessiveness; that is, greed is a word with a broader meaning than possessiveness:

possessiveness: excessive desire to possess or dominate
greed: excessive desire to acquire or possess more (especially more material wealth) than one needs or deserves

possessiveness (noun)	greed (noun)
excessive desire to possess or dominate	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