repetition
US /ˌrep.əˈtɪʃ.ən/
UK /ˌrep.əˈtɪʃ.ən/

1.
the action of repeating something that has already been said or written
:
•
The repetition of the main theme makes the song memorable.
•
He used repetition to emphasize his point.
2.
the act of doing something again
:
•
Daily repetition of exercises is crucial for muscle growth.
•
Learning a language requires constant repetition.