Redundancy in English

Certain words which begin with the prefix ‘re’ which means ‘again’ will be redundant in meaning if ‘again’ is used after them. The following examples will clarify what I have said:
1 He will redo the whole process again. (again is redundant)
He will redo the whole process. (correct)
2 She repeated what she had said again. (again is redundant)
She repeated what she had said. (correct)