coun·ter·part
 /ˈkaʊntɚˌpɑɚt/  noun  ,  pl   -parts [  count  ]
  : someone or something that has the same job or purpose as another
   The secretary of defense met with his counterparts in Asia to discuss the nuclear crisis.
   Metal tools replaced their stone counterparts many, many years ago.
   the lead actress and her male counterpart