A sphere is a three dimentional shape, a circle is a two dimentional shape. You can't pick up a circle, it can only be drawn.
In differential geometry, a one dimensional sphere is a point, a two dimensional sphere is a circle and a three dimensional sphere is what we call a "sphere", there is no limit to the number of dimensions a sphere can have.
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a circle is a curved shape with no angels and a rhombus is a polygon with four angles
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The ball is circle in shape because it is spherical in form and it is easier to control or to handle. Like the ring in the basketball,it is seems like a shape in a ball(spherical) so that it is easy to shoot the ball into the ring.
A sphere to a cone is the same as a circle is to a triangle but they are both 3 dimensional.
a cube is a 3d square and a cylinder is 3d circle + rectangle shape.