In ECMAScript, how are some of native objects also built-in?

Question

I suppose a definition of native and built-in objects is required to answer this question. Here\'s what the ECMAScript spec defines these as:

4.3.6 native

Answer 1

Native object - means implemented not in ECMAScript itself. Buiilt-in object - the one that's provided by the engine. Think Math, String and such.