agency
backscratching
barter
bartering
brokerage
buying and selling
colossal
dealing
doing business
enormous
even trade
exchange
giant
gigantic
give-and-take
horse trading
immense
interchange
jobbing
jumbo
logrolling
mammoth
merchandising
pork barrel
retailing
swap
switch
trade
trading
trafficking
tremendous
wheeling and dealing
wholesaling
whopping
chopping
copping
cropping
dropping
flopping
hopping
lopping
mopping
popping
propping
shopping
sopping
stopping
topping
wapping