biology vs ecological

biology is a noun but ecological is not a noun.

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

biology (noun)	ecological (noun)
the science that studies living organisms
all the plant and animal life of a particular region
characteristic life processes and phenomena of living organisms

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