What Notes that have different names but sound the same are called?

Notes that have different names but sound the same are called enharmonics.

Here are some examples:

* C# and Db are enharmonics.

* F# and Gb are enharmonics.

* A# and Bb are enharmonics.

This difference arises because of the two different ways we can write the same pitch in Western music:

* Natural notes: C, D, E, F, G, A, B

* Sharps and flats: #, b

Enharmonics can sometimes be confusing, especially when looking at music notation. However, they are an essential part of musical theory and help us understand the relationships between different notes.