greedy vs greed

greedy is not a noun while greed is a noun.

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

greedy (noun)	greed (noun)
	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

greedy (adjective)	greed (adjective)
immoderately desirous of acquiring e.g. wealth
(often followed by `for') ardently or excessively desirous
wanting to eat or drink more than one can reasonably consume