collator

/K AH0 L EY1 T ER0/
noun
  1. 1

    A person who collates.

  2. 2

    A program or algorithm that collates.

  3. 3

    A machine that selects, merges and matches decks of punch cards.

  4. 4

    A police officer who maintains criminal records and analyzes them for intelligence.

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