Circularity vs. Eccentricity — What's the Difference?

Of or relating to a circle.

The quality of being eccentric.

Shaped like or nearly like a circle; round.

Deviation from the normal, expected, or established.

Moving in or forming a circle.

An example or instance of eccentric behavior.

Circuitous; roundabout

(Physics) The distance between the center of an eccentric and its axis.

Using a premise to prove a conclusion that in turn is used to prove the premise

The ratio of the distance of any point on a conic section from a focus to its distance from the corresponding directrix. This ratio is constant for any particular conic section.

Defining one word in terms of another that is itself defined in terms of the first word.

Such a ratio used to define the shape of the orbit or path of a celestial body or satellite.

Addressed or distributed to a large number of persons.

The quality of being eccentric or odd; any eccentric behaviour.

A printed advertisement, directive, or notice intended for mass distribution.

(mathematics) The ratio, constant for any particular conic section, of the distance of a point from the focus to its distance from the directrix.

(uncountable) The state of being circular.

(astronomy) The eccentricity of the conic section (usually an ellipse) defined by the orbit of a given object around a reference object (such as that of a planet around the sun).

(countable) A circular object, form or argument.

The state of being eccentric; deviation from the customary line of conduct; oddity.

The quality or state of being circular; a circular form.

The ratio of the distance between the center and the focus of an ellipse or hyperbola to its semi-transverse axis.

The roundness of a 2-dimensional figure

The ratio of the distance of the center of the orbit of a heavenly body from the center of the body round which it revolves to the semi-transverse axis of the orbit.

The distance of the center of figure of a body, as of an eccentric, from an axis about which it turns; the throw.

Strange and unconventional behavior

(geometry) a ratio describing the shape of a conic section; the ratio of the distance between the foci to the length of the major axis;

A circularity that has a different center or deviates from a circular path