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)

一喜一憂[ikkiichiyuu] now rejoicing, now worrying
歓喜[kanki] delight
甘言は偶人を喜ばす[kangenhaguujinwoyorokobasu] sweet words only please a fool (prov)
喜がる[yogaru] to satisfy oneself
喜の字[kinoji] 77th birthday

喜び勇む[yorokobiisamu] to be in high spirits
喜ぶ[yorokobu] to be delighted
喜んで[yorokonde] with pleasure ...
喜悦[kietsu] joy
喜歌う[yorokobiutau] to rejoice and sing

厭世悲観者[enseihikansha] pessimist
慈悲[jihi] compassion (e.g. of Buddha)
慈悲心[jihishin] benevolence
嘆き悲しむ[nagekikanashimu] to grieve and moan
悲しい[kanashii] sad

悲しむ[kanashimu] to be sad
悲哀[hiai] sorrow
悲運[hiun] sad fate
悲歌慷慨[hikakougai] indignant lamentation over the evils of the times
悲観[hikan] pessimism