Lexical environment and function scope

Question

Is lexical environment and scope in javascript one and the same thing?

Answer 1

Lexical Environment is the environment of the function where it is written. That is, the static order/place where it is situated, regardless from where it is called from.

Scope of a variable/function is basically the locations from where a variable is visible/accessible.

Execution context is the status of the execution stack at any point during runtime. That is the current execution context.