What's the difference between a wing root and a chicken leg?

Chicken wing root is also called chicken hammer, and chicken wing root has only one bone! And much shorter than chicken legs!

Chicken leg picture:

Chicken legs come from chicken thighs (with bones), and chicken legs have two bones! A main bone is thick and there is a small thin bone next to it!

Chicken wing root picture:

Intuitively, the chicken wing root is much smaller than the chicken leg (pipa leg), and the two pictures are clear together.