What do we call two different names for the same pitch?

Two different names for the same pitch are referred to as enharmonic. This term is commonly used in music theory to describe pitches that are notated differently but sound the same when played, such as C♯ and D♭. Enharmonic equivalents arise in musical contexts where the same key on a piano can correspond to different notational contexts, which is especially relevant in various scales, keys, and harmonic functions. Understanding enharmonic relationships is crucial for interpreting musical notation, performing, and composing music. The other terms listed do not pertain to this specific concept in music theory.