it is called a crater
flexible, circular moorings
domes
a pig pipe
A circular path that electricity flow in is called a "circuit". A circuit does not have to be circular in shape, but must begin and end at the same point like a circle does.
The rotunda building
The circular building that gladitorial contests were held in is called the Coliseum.
A circular room in commercial buildings or out buildings is called a round house, in a private house it can be called among other things a turret. A rotunda is a round building or a room in a building, the central hall in the Capitol Building in Washington DC is an excellent example of a rotunda ( round room).
An inverse is NOT called a circular function. Only inverse functions that are circular functions are called circular functions for obvious reasons.
Tempietto - a small, circular building resembling a minature temple
If you are referring to currents in iron cores, circular currents are called eddy currents.
Circular ocean currents are called gyres.
This is called uniform circular motion.
so that people cant fit there head there
the distance around a circular region is called circumference
Uniform circular motion.
The Beehive is a descriptive (shape [skep] - not activity) term for the circular building housing mainly the Prime Minister and the Cabinet holders.