Duad as a collective noun

Duad is used as a collective noun in phrases like Duad of Twins .

A duad is an uncommon term used to describe a collective noun representing a pair or a twofold unit of people, animals, or objects. In such cases, the singular noun "duad" replaces the traditional plural phrase usually employed to indicate multiple individuals or things. While relatively obscure, this term allows for a unique and concise naming convention for a group of two entities. Examples of duads could include a duad of dancers, a duad of lovers, a duad of butterflies, or a duad of earrings. The uniqueness of a duad lies in its ability to denote a distinct and inseparable association between its members, emphasizing the importance of their shared characteristics or qualities.