agency
agent
alternate
alternative
analogy
backup
backup man
change
changeling
commutation
comparison
copy
counterfeit
delegation
deputation
deputy
deputyship
descendant
displacement
double
dummy
equal
equivalent
ersatz
exchange
fake
fill-in
ghost
ghostwriter
heir
imitation
improvement
inheritor
instauration
locum
locum tenens
makeshift
metaphor
metonymy
next best thing
personnel
phony
pinch hitter
posterity
power of attorney
proxy
quid pro quo
reactivation
reconstitution
reconversion
compeer
filling
fluctuation
match
peer
relief
reliever
stand-in
substitute
variation
access
adjustment
deployment
distribution
emergency
evacuation
inspection
installation
modification
monitor
recovery
removal
repair
storage
supply
test
transfer
transportation
basement
debasement
emplacement
placement
retracement