Partly.
circle
That sounds like a cone. One surface is a circle and the other surface is curved.
A circle or a sphere.
circle and a curved surface
Circle
semi-circle
A cylinder. Also, howsabout a hemisphere ?
half circle
Circle
its a lens...1 curved edge = a circle, 1 flat surface = back, 1 curved surface = front. (these are used in some battery-less flashlights, as an example.)
An s cylinder is a part of a car engine. The cylinder is curved metal that is in fact in a curved surface at is a circle. There are different shapes but a standard s cylinder is circular.