greedy vs devouring

greedy and devouring both are adjectives.

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

As adjectives, greedy and devouring are synonyms defined as:

greedy and devouring: (often followed by `for') ardently or excessively desirous

Other synonyms of greedy include avid, esurient.

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