Circular vs. Circumference: What's the Difference?

Circular and Circumference Definitions
Circular
Of or relating to a circle.
Circumference
The boundary line of a circle.
Circular
Shaped like or nearly like a circle; round.
Circumference
The boundary line of an area or object.
Circular
Moving in or forming a circle.
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Circumference
Abbr. c or circ. The length of such a line.
Circular
Circuitous; roundabout
Took a circular route to the office.
Circumference
The margin or area surrounding something.
Circular
Using a premise to prove a conclusion that in turn is used to prove the premise
A circular argument.
Circumference
(geometry) The line that bounds a circle or other two-dimensional figure Category:en:Curves
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Circular
Defining one word in terms of another that is itself defined in terms of the first word.
Circumference
(geometry) The length of such a line
Circular
Addressed or distributed to a large number of persons.
Circumference
(obsolete) The surface of a round or spherical object
Circular
A printed advertisement, directive, or notice intended for mass distribution.
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Circumference
(graph theory) The length of the longest cycle of a graph
Circular
Of or relating to a circle.
Circumference
To include in a circular space; to bound.
Circular
In the shape of, or moving in a circle.
Circumference
The line that goes round or encompasses a circular figure; a periphery.
Circular
Circuitous or roundabout.
Circumference
A circle; anything circular.
His ponderous shield . . .Behind him cast. The broad circumferenceHung on his shoulders like the moon.
Circular
Referring back to itself, so as to prevent computation or comprehension; infinitely recursive.
Circular reasoning
Your dictionary defines "brave" as "courageous", and "courageous" as "brave". That's a circular definition.
A circular formula in a spreadsheet
I changed the definition of "sex" from "to have sex" to "to have sexual intercourse"; a dictionary definition must never be circular; using the word being defined to define itself.
Circumference
The external surface of a sphere, or of any orbicular body.
Circular
Distributed to a large number of persons.
Circumference
To include in a circular space; to bound.
Circular
(obsolete) Perfect; complete.
Circumference
The size of something as given by the distance around it
Circular
(archaic) Adhering to a fixed circle of legends; cyclic; hence, mean; inferior.
Circumference
The length of the closed curve of a circle
Circular
Syn of flyer: a printed advertisement, directive, or notice intended for mass circulation.
Circular
(dated) A sleeveless cloak cut from a circular pattern.
Circular
A shuttle bus with a circular route.
Circular
To distribute circulars to or at.
Circular
To extend in a circular direction.
Circular
In the form of, or bounded by, a circle; round.
Circular
Repeating itself; ending in itself; reverting to the point of beginning; hence, illogical; inconclusive; as, circular reasoning.
Circular
Adhering to a fixed circle of legends; cyclic; hence, mean; inferior. See Cyclic poets, under Cyclic.
Had Virgil been a circular poet, and closely adhered to history, how could the Romans have had Dido?
Circular
Addressed to a circle, or to a number of persons having a common interest; circulated, or intended for circulation; as, a circular letter.
A proclamation of Henry III., . . . doubtless circular throughout England.
Circular
Perfect; complete.
A man so absolute and circularIn all those wished-for rarities that may takeA virgin captive.
Circular
A circular letter, or paper, usually printed, copies of which are addressed or given to various persons; as, a business circular.
Circular
A sleeveless cloak, cut in circular form.
Circular
An advertisement (usually printed on a page or in a leaflet) intended for wide distribution;
He mailed the circular to all subscribers
Circular
Having a circular shape
Circular
Shaped like a ring
Circular
Marked by or moving in a circle