I am confused on the concepts of Promise, Resolve, Reject, then, catch.

While I know how to write code that works, I want to clarify some questions:

Question 1: Regarding Resolve, Reject, then, catch, Are these methods all introduced together with Promise? Before Promise is introduced to Javascript, does Javascript already have these special methods?

Question 2: Are the method names resolve, reject that are passed as parameters to executor functions in Promise arbitrary? For example:

const executorFunction = (resolve, reject) => {
  if ('1' === '1') {
      resolve('I resolved!');
  } else {
      reject('I rejected!'); 
  }
}
const myFirstPromise = new Promise(executorFunction);

This above code works well, no syntax error or anything. The promise will be in fulfilled state with 'I resolved!' value. But if I do:

const executorFunction = (A, B) => {
  if ('1' === '1') {
      A('I resolved!');
  } else {
      B('I rejected!'); 
  }
}
const myFirstPromise = new Promise(executorFunction);

Would it still work? Will the promise still be in fulfilled state with 'I resolved!' value?

And to make it further, if I swap the method names:

const executorFunction = (reject, resolve) => {
  if ('1' === '1') {
      reject('I resolved!');
  } else {
      resolve('I rejected!'); 
  }
}
const myFirstPromise = new Promise(executorFunction);

Now, would this work? Will the promise still be in fulfilled state with 'I resolved!' value?