abasement
n. Unfavorable comparison to some other person or some standard. Henry Murray suggested abasement was a basic human need to lower one’s self relative to those other people a person considers superior to himself or herself, to give power to that superior person, or to atone for perceived errors or sins.

abasia
n. The state of being unable to walk due to an absence or def ciency in motor coordination. There are numerous causes of abasia including muscle, joint, nerve, or bone problems in the legs; damage or malformation of the spinal cord; and damage or malformation of the brain.

ability
n. A capacity to accomplish a task at the present moment. This implies that any learning or developmental process necessary to the task has already been accomplished. Ability often contrasts with aptitude or potential or inherent but unrealized capacity which needs further learning or development to become an ability. Intelligence tests measure ability and are sometimes used to infer aptitude for future learning.