If you were a carpenter, you might have a saw, a wrench, a hammer, a screw driver, a drill.
A saw can’t do what a hammer does, and a screw driver can’t do what a wrench does.
As a carpenter, you learn each tool and you even have variations of each of the tools.
You may have a flat-nosed screwdriver or ratchet screwdriver.
You could have a light-weight ladies hammer or a heavy duty metal hammer.
Each tool performs a different function and gets used in a specific way.
So too it is with the yoga poses.
As we practice yoga, we learn what each one does in our own body.