circumscription vs circumscribe

circumscription is a noun but circumscribe is not a noun.

Word	Noun	Adjective	Verb	Adverb
circumscription	Yes	No	No	No
circumscribe	No	No	Yes	No

circumscription (noun)	circumscribe (noun)
the act of circumscribing

circumscription (verb)	circumscribe (verb)
	restrict or confine within limits
	draw a line around
	to draw a geometric figure around another figure so that the two are in contact but do not intersect