correlatives

/K AO1 R AH0 L AH0 T IH0 V Z/
noun
  1. 1

    Either of two correlative things.

  2. 2

    (grammar) A pro-form; a non-personal pronominal, proadjectival, or proadverbial form

Source: https://en.wiktionary.org/wiki/correlative, https://en.wiktionary.org/wiki/correlatives