greed vs greedy

greed is a noun but greedy is not a noun.

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

greed (noun)	greedy (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

greed (adjective)	greedy (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