Cuboid.
A cuboid.
A cuboid.
A cuboid.
A cuboid fits the description given
cube
Cuboid.
A butt
Cuboid
A cuboid.
A cuboid.
A cuboid.
A cuboid fits the description given
In its most general form, a parallelepiped.
A box is a 3D shape with 6 rectangles (a box could also include squares). The rectangles are: Top/Bottom/Front/Back/Side/Side
Every rectangular prism does. That includes cubes.
There is no 3D shape with 6 faces: 4 rectangles and 2 triangles. See the link for all forms of hexahedra.