ない交ぜにする[naimazenisuru] to blend (e.g. truth and lies)
データ交換[deetakoukan] data exchange
メール交換[meerukoukan] exchange of letters
リーダー交代[riidaakoutai] leadership change
意見交換[ikenkoukan] exchange of ideas

一方交通[ippoukoutsuu] one-way traffic
羽交絞め[hagaijime] pinioning
仮名交じり[kanamajiri] mixed writing (characters and kana)
仮名交じり文[kanamajiribun] mixed writing (characters and kana)
賀詞交換[gashikoukan] New Year greetings (parties)

蘇連[soren] (former) Soviet Union
ドイツ連邦共和国[doitsurenpoukyouwakoku] Federal Republic of Germany (former West Germany)
破天連[pateren] Portuguese Jesuits (in Japan in the 16th century)
一連[ichiren] series
引連れる[hikitsureru] to take along with

英連邦[eirenpou] Commonwealth of Nations (formerly British Commonwealth)
欧州連合[oushuurengou] European Union
家族連れ[kazokuzure] taking the family along
関連[kanren] relation
関連会社[kanrengaisha] associated company