What is the difference between polyfill and transpiler?

Question

What is the difference between a polyfill and transpiler?

I often read the same term used in similar context.

Answer 1

Polyfilling is like copying a feature so that one can use it. In polyfilling, one write code to get a similar functionality as provided in other JS version.

Transpilling convert code which has new syntax using transpiler so that it can be used in browsers having older Js versions.