Mechanically, equipments are required to design the machines. A machine is a tool, which is used to operate any task, whereas equipment is a set of tools necessary for a particular purpose.

Dwarfism is the condition of being a dwarf. Midget is termed for a person who is a dwarf, but with normal features and body proportions.

Dwarfism is defined as the condition of being a dwarf. Cretinism is a condition arising from the deficiency of thyroid hormone, which causes dwarfism and mental retardation. It is present from birth.

Can is used as an auxiliary to indicate ability, skill, or fitness to perform a task. Whereas, Could is used as an auxiliary to make the past tense of can.

A concave curve is rounded inward, whereas a convex curve is rounded like the exterior of a sphere.