This might seem like a trick question, but it's important to remember that homonyms are words that sound the same but have different meanings and spellings.
Here are some examples of how "rock" can be used as a homonym:
* Rock (noun): a solid piece of stone.
* Rock (verb): to move back and forth rhythmically.
* Rock (noun): a type of music.
Let me know if you'd like to explore other homonyms!