The name truncated cuboctahedron, given originally by Johannes Kepler, is misleading.
An actual truncation of a cuboctahedron has rectangles instead of squares.
This nonuniform polyhedron is topologically equivalent to the Archimedean solid.

Alternate interchangeable names are:
Truncated cuboctahedron (Johannes Kepler)
Rhombitruncated cuboctahedron (Magnus Wenninger)
Great rhombicuboctahedron (Robert Williams)
Great rhombcuboctahedron (Peter Cromwell)
Omnitruncated cube or cantitruncated cube (Norman Johnson)
Beveled cube (Conway polyhedron notation)
There is a nonconvex uniform polyhedron with a similar name, the nonconvex great rhombicuboctahedron.
The name truncated cuboctahedron, given originally by Johannes Kepler, is misleading. An actual truncation of a cuboctahedron has rectangles instead of squares. This nonuniform polyhedron is topologically equivalent to the Archimedean solid.
Alternate interchangeable names are:
Truncated cuboctahedron (Johannes Kepler)
Rhombitruncated cuboctahedron (Magnus Wenninger)
Great rhombicuboctahedron (Robert Williams)
Great rhombcuboctahedron (Peter Cromwell)
Omnitruncated cube or cantitruncated cube (Norman Johnson)
Beveled cube (Conway polyhedron notation)
There is a nonconvex uniform polyhedron with a similar name, the nonconvex great rhombicuboctahedron.
Truncated cuboctahedron