angularity vs angular

angularity is a noun but angular is not a noun.

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

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

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