counterpart

/หˆkaสŠntษšหŒpษ‘ษนt/
noun
  1. 1

    Either of two parts that fit together, or complement one another.

    โ€œThose brass knobs and their hollow counterparts interlock perfectlyโ€

  2. 2

    A duplicate of a legal document.

  3. 3

    One which resembles another

  4. 4

    One which has corresponding functions or characteristics.

  5. 5

    Either half of a flattened fossil when the rock has split along the plane of the fossil.

verb
  1. 1

    Counterbalance.

Source: https://en.wiktionary.org/wiki/counterpart