duplet
A "duplet" refers to a pair of items or elements that are grouped together. In various contexts, it can describe two related components, such as a pair of musical notes or two connected ideas. The term is often used in fields like music, mathematics, and linguistics to indicate a set of two.
In music, a duplet typically consists of two notes played in the time usually allotted for three notes of the same value. This creates a unique rhythmic feel. In mathematics, a duplet can refer to an ordered pair of numbers, often used in coordinate systems or to represent relationships between two variables.