Question

Are there poles in a circular magnet, are there poles on earth ?

Answer 1

Yes there are poles on magnetic circuits.
All magnets, no matter what their shape, have two regions called magnetic poles with the magnetism both in and around a magnetic circuit.

Earth has two geographic poles: the North Pole and the South Pole. They are the places on Earth's surface that Earth's imaginary spin axis passes through. Our planet also has two magnetic poles: the North Magnetic Pole and the South Magnetic Pole.