A hard solid item with a specific shape and size is referred to as a rigid body. In truth, though, bodies may be bent, crushed, and stretched. When a powerful enough external force is applied to a stiff steel bar, it can even flex.
This shows that rigidity is not absolute in solid bodies. Solids are of a specific size and shape.
A force is always needed in order to change (or deform) their shapes or sizes.
Two major properties of solids are
Solids have hard structures that are generally resistant to external influences. As a result, they are also recognised for having a set, distinct shape.