A 3 dimensional shape is usually called a prism. Such as a spherical, conical, pyramidal, rectangular, square, quadrilateral, or polygonal prism. Others have different names. A flat strip, folded over once and looped around is called a mobius and has 1 edge and 1 side but is technically 3 dimensional.
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vessel
When two sides (called faces) of a 3-dimensional shape meet, they meet at an edge.
An oval is two-dimensional. An ovoid is a three-dimensional shape based on an oval - like an egg,
An egg-shaped, three-dimensional shape is an ovoid.
a polyhedron * * * * * That is only if it is bounded by plane faces. A sphere, for example, is a three dimensional shape but is not a polyhedron: it is a solid shape.