angular vs angularity

angular is not a noun while angularity is a noun.

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

angular (noun)	angularity (noun)
	the property possessed by a shape that has angles
	a shape having one or more sharp angles

angular (adjective)	angularity (adjective)
having angles or an angular shape
measured by an angle or by the rate of change of an angle