The fact that somebody/something is able to do something.***Vd: People with the disease may lose their ability to communicate.***A level of skill or intelligence.***Vd: It's important to discover the natural abilities of each child.
On the subject of somebody/something; in connection with somebody/something.***VD: a book about flowers.***Used to describe the purpose or an aspect of something.***Vd: Movies are all about making money these days.Busy with something; doing.***something