economic vs economy

economic is not a noun while economy is a noun.

Word	Noun	Adjective	Verb	Adverb
economic	No	Yes	No	No
economy	Yes	No	No	No

economic (noun)	economy (noun)
	an act of economizing; reduction in cost
	frugality in the expenditure of money or resources
	the efficient use of resources
	the system of production and distribution and consumption

economic (adjective)	economy (adjective)
of or relating to the science of economics
of or relating to an economy, the system of production and management of material wealth
using the minimum of time or resources necessary for effectiveness
financially rewarding
concerned with worldly necessities of life (especially money)