| quid pro quo(expression, idiom, change, talk, argument) |
| tit for tat(expression, idiom, change, talk, argument) |
| exchange(noun, talk, argument, trade, deal) |
| change(talk, argument, transfer, conversation, network) |
| commutation(change, talk, argument, transfer, conversation) |
| replacement(change, talk, argument, transfer, conversation) |
| supplanting(change, talk, argument, transfer, conversation) |
| switch(change, talk, argument, transfer, conversation) |
| agency |
| barter(change, talk, argument, trade, transfer) |
| buying and selling(expression, idiom, change, talk, argument) |
| castling(change, talk, argument, trade, transfer) |
| conversion(change, talk, argument, transfer, conversation) |
| correspondence(talk, argument, conversation) |
| dealing(change, talk, argument, transfer, conversation) |
| delegation |
| deputation |
| displacement |
| interchange(talk, argument, trade, conversation, traffic) |
| interdependence(talk, argument, conversation) |