biology vs scaly

biology is a noun but scaly is not a noun.

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

biology (noun)	scaly (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)	scaly (adjective)
	having the body covered or partially covered with thin horny plates, as some fish and reptiles
	rough to the touch; covered with scales or scurf