function_name(); vs function_name.call(); ? what is the difference between calling a function those two way ?

Question

here function_name is the name of function.
in JavaScript what is the difference between this two way of calling function?

for example:

function foo (){
// code goes here.
}
foo();
foo.call();

what is the difference between foo(); and foo.call();

Answer 1

Tag the relevant programming language. Is function_name the name of your own function?

this is from the documentation:
"The call() allows for a function/method belonging to one object to be assigned and called for a different object."
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call

Answer 2

The first argument passed to call is the this object. If you just use () and not call, you cant influence what this is before calling