Paraplegia

Paraplegia implies motor and/or sensory deficit in bilateral legs and usually lower trunk (abdomen and waist).

Tetraplegia

Tetraplegia, also called quadriplegia, is condition characterized with partial or complete loss of function in extremities and trunk secondary to a disease or an injury; paraplegia is a similar condition, but it does not involve arms. Motor deficit is associated with sensory deficits in most cases.