biological science vs polydactyl

biological science is a noun but polydactyl is not a noun.

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

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

biological science (adjective)	polydactyl (adjective)
	of or relating to a person (or other vertebrate) having more than the normal number of digits