symmetry vs symmetrise

symmetry is a noun but symmetrise is not a noun.

Word	Noun	Adjective	Verb	Adverb
symmetry	Yes	No	No	No
symmetrise	No	No	Yes	No

symmetry (noun)	symmetrise (noun)
(mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane
(physics) the property of being isotropic; having the same value when measured in different directions
balance among the parts of something

symmetry (verb)	symmetrise (verb)
	make symmetric