What is the difference between Able and Capable?

What is the difference between Able and Capable? : 

Able : 


( 1 ) Have the power – means or opportunity to do

The child is not yet able to write. 

( 2 ) Competent – having the knowledge or skill

He is an able worker. 

Capable : 

( 1 ) Having the ability or power necessary for something

I am capable of better work than this. 

She is capable of running a mile in five minutes. 

( 2 ) Having the ability

She is a very capable woman. 

( 3 ) Having the character or inclination to do something

He is quite capable of lying to get out of trouble. 

( 4 ) Open to or allowing something

Our position is capable of improvement.