Circularizes vs Circularises - What's the difference?

As verbs the difference between circularizes and circularises

is that circularizes is third-person singular of circularize while circularises is third-person singular of circularise.

(head)

(circularize)

(circulariz)

To publicize something by publishing and distributing circulars.

To canvass opinion by using a questionnaire.

To make something circular in shape.

(head)

(circularise)

(circularis)