関聯[kanren] relation
聯繋[renkei] connection
聯合[rengou] union
聯想[rensou] association (of ideas)
聯隊[rentai] regiment

聯邦[renpou] commonwealth
聯盟[renmei] league
聯絡[renraku] to contact
聯立[renritsu] alliance
聯句[renku] linked verse

一隊[ittai] party
掩護部隊[engobutai] covering force
横隊[outai] rank
火力支援部隊[karyokushienbutai] fire support element
海兵隊[kaiheitai] Marine Corps

外国部隊[gaikokubutai] overseas (military forces)
格闘戦部隊[kakutousenbutai] shock troops
楽隊[gakutai] band
艦隊[kantai] (naval) fleet
機動隊[kidoutai] riot police