scaly vs biological science

scaly is not a noun while biological science is a noun.

Word	Noun	Adjective	Verb	Adverb
scaly	No	Yes	No	No
biological science	Yes	No	No	No

scaly (noun)	biological science (noun)
	the science that studies living organisms

scaly (adjective)	biological science (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