物々交換

ぶつぶつこうかん

bartering

換質換位

かんしつかんい

contraposition

換装

かんそう

exchanging parts or equipment to effect a change in performance

兌換

だかん

conversion (of paper money, esp. into specie)

換気

かんき

ventilation

換位

かんい

(logical) conversion (transposition of subject and predicate to form a new proposition)

換質

かんしつ

obversion

換羽

かんう

molting

交換

こうかん

exchange, interchange, switching, reciprocity, barter, substitution, replacement, clearing (of checks, cheques)

転換

てんかん

conversion, diversion, changeover, commutation, switchover

互換

ごかん

transposition, interchange

可換

かかん

commutative

換地

replotting; land substitution

換言

かんげん

in other words

変換

へんかん

change, conversion, transformation, translation

換毛

かんもう

molting

換喩

かんゆ

metonymy

換算

かんさん かんざん

conversion (e.g. yen to dollars), change, exchange, translation (numerical)

置換

ちかん

substitution, replacement