Have you looked the words up in a dictionary?
What's the difference between the words plead, entreat, beg and implore?
"Give me one more chance," he begged.
Can plead, entreat or implore replace begged in the sentence above?
No, they are definitely not interchangeable. For example, you can't "entreat, beg or implore" "Not guilty". You generally don't implore for money on a street corner, or entreat for forgiveness.