ecological vs ecology

ecological is not a noun while ecology is a noun.

Word	Noun	Adjective	Verb	Adverb
ecological	No	Yes	No	No
ecology	Yes	No	No	No

ecological (noun)	ecology (noun)
	the branch of biology concerned with the relations between organisms and their environment
	the environment as it relates to living organisms

ecological (adjective)	ecology (adjective)
of or relating to the science of ecology
characterized by the interdependence of living organisms in an environment