agency
change
commutation
delegation
deputation
deputyship
displacement
exchange
power of attorney
quid pro quo
replacement
representation
subrogation
substitution
supersedence
superseding
supersedure
supersession
supplantation
supplantment
switch
tit for tat
vicariousness
replacing
chanting
decanting
enchanting
granting
implanting
lanting
panting
planting
ranting
recanting
replanting
slanting
transplanting