| exchange(noun, act, change, talk, shift) |
| replacement(noun, change, return, talk, argument) |
| switch(noun, move, act, change, shift) |
| interchange(noun, act, change, talk, transfer) |
| change(noun, act, change, transfer, exchange) |
| commutation(noun, act, change, talk, argument) |
| swap(noun, act, change, informal, shift) |
| displacement(noun, move, switch, assignment, transmission) |
| permutation(noun, exchange) |
| substitute(noun, replacement) |
| trade(noun, act, change, exchange, substitute) |
| conversion(noun, move, change, talk, argument) |
| surrogate(noun, substitute) |
| transposition(noun, act, change, talk, transfer) |
| alternative(noun, substitute, replacement) |
| alternate(noun, substitute) |
| imitation(noun, reproduction, replication, simulation) |
| proxy(noun, substitute) |
| quid pro quo(expression, idiom, change, talk, argument) |
| replacing |