能力

The work is well beyond his capability.

This is well within our capacity.

She lost her use of legs.

No one doubts your competence.

reading ability

professional/occupational competence

scholarly competence; scholastic aptitude

the ability to write

thinking powers

practical ability

viability

producing power; productive capacity

social competence

competence in handling money

technical competence

administrative ability

all-round ability

exert/develop one's ability

demonstrate/display/exhibit/show/reflect/reveal one's ability

increase/improve/enhance/upgrade one's ability

assess/judge/estimate one's ability

cultivate/develop one's ability

have the capacity/power (to do sth); be within one's capacity/power (to do sth)