What is the term for the distance between two notes that is equivalent to two semitones?

The correct answer, "Tone," refers to the distance between two notes that is equivalent to two semitones. In Western music theory, a tone is often described as a whole step, encapsulating the idea of moving from one note to another while skipping over the note in between, which represents a half step (or semitone). For instance, moving from C to D is a whole step or tone, indicating that two half steps (C to C# and then C# to D) have been traversed.

While "Interval" is a term used to describe the distance between any two pitches, it does not specify the quantity of semitones. Similarly, a "Whole Step" is essentially synonymous with a tone, but the term "Tone" directly highlights the musical concept. A "Half Step" refers to the smaller distance of one semitone, which is not the distance in question here.