angular vs bicuspid

angular is not a noun while bicuspid is a noun.

Word	Noun	Adjective	Verb	Adverb
angular	No	Yes	No	No
bicuspid	Yes	Yes	No	No

angular (noun)	bicuspid (noun)
	a tooth having two cusps or points; located between the incisors and the molars

angular (adjective)	bicuspid (adjective)
having angles or an angular shape	having two cusps or points (especially a molar tooth)
measured by an angle or by the rate of change of an angle