Verb:
* Repeat: This is the most common verb form. It means to say or do something again.
* Example: "Please repeat the instructions."
Noun:
* Repetition: This refers to the act of doing something again.
* Example: "The repetition of the same phrase became tedious."
Adjective:
* Repetitive: This describes something that is done or said again and again.
* Example: "The job was repetitive and boring."
* Repeated: This describes something that has been done or said more than once.
* Example: "The repeated warnings went unheeded."
Adverb:
* Repetitively: This describes an action that is done repeatedly.
* Example: "The machine repetitively churned out the same product."
Note: There is no direct adverb form of "repetition" itself. We use the adverb "repetitively" to describe actions involving repetition.