acquisitive vs grasping

acquisitive is not a noun while grasping is a noun.

Word	Noun	Adjective	Verb	Adverb
acquisitive	No	Yes	No	No
grasping	Yes	Yes	No	No

acquisitive (noun)	grasping (noun)
	the act of gripping something firmly with the hands (or the tentacles)
	understanding with difficulty

acquisitive (adjective)	grasping (adjective)
eager to acquire and possess things especially material possessions or ideas	immoderately desirous of acquiring e.g. wealth