duo

definition: a musical composition for two performers
example:
speech part: noun
synonyms: duet
definition: a pair who associate with one another
example:
speech part: noun
synonyms: duet
definition: two performers or singers who perform together
example:
speech part: noun
synonyms: duet
definition: two items of the same kind
example:
speech part: noun
synonyms: span

How duo is being used?