conjunction
con·junc·tion
 /kənˈʤʌŋkʃən/  noun  ,  pl   -tions [  count  ]
  1 grammar : a word that joins together sentences, clauses, phrases, or words
   Some common conjunctions are “and,” “but,” and “although.”
  2 formal : a situation in which two or more things happen at the same time or in the same place
   an unfortunate conjunction [=concurrence] of events
  in conjunction with
    formal   : in combination with : together with
    The concert will be held in conjunction with the festival.
    The medicine is typically used in conjunction with other treatments.