交換【こうかん】
exchange, interchange, switching, reciprocity, barter, substitution, replacement, clearing (of checks, cheques)
引き換え【ひきかえ】
exchange, conversion
気分転換【きぶんてんかん】
change of pace, change of mood, (mental) break (e.g. going for a walk), refreshment
換算【かんさん】
conversion (e.g. yen to dollars), change, exchange, translation (numerical)
換気【かんき】
ventilation
乗り換え【のりかえ】
transfer (trains, buses, etc.), change, connection, switch (to another ideology, party, system, method, etc.), change, conversion, switching (stock), chromosomal crossover, crossing over
変換【へんかん】
change, conversion, transformation, transformation
乗り換える【のりかえる】
to transfer (trains), to change (bus, train), to change (to another ideology, party, company, etc.), to switch (to a different system, method, etc.), to move on to (e.g. a new love interest)
言い換える【いいかえる】
to say in other words, to put another way, to express in different words, to reword, to rephrase
置き換える【おきかえる】
to replace, to move, to change the position of
互換【ごかん】
interchange, transposition, compatible (e.g. PC)
換金【かんきん】
realization (of goods into money), conversion (into money), liquidation
書き換える【かきかえる】
to rewrite, to overwrite, to renew, to transfer
借り換え【かりかえ】
conversion, refunding, renewal
交換条件【こうかんじょうけん】
bargaining point, terms of exchange, conditions for meeting a demand
言い換え【いいかえ】
putting in other words
引き換える【ひきかえる】
to exchange (things), to convert (currency), to be in contrast (to), to contrast (with)
交換手【こうかんしゅ】
operator (e.g. telephone)