trade
noun
the commercial exchange (buying and selling on domestic or international markets) of goods and services
“Venice was an important center of trade with the East”
“they are accused of conspiring to constrain trade”
the skilled practice of a practical occupation
“he learned his trade as an apprentice”
Synonymscraftthe business given to a commercial establishment by its customers
“even before noon there was a considerable patronage”
Synonymspatronagea particular instance of buying or selling
“it was a package deal”
“I had no further trade with him”
people who perform a particular kind of skilled work
“he represented the craft of brewers”
“as they say in the trade”
Synonymscraftsteady winds blowing from east to west above and below the equator
“they rode the trade winds going west”
Synonymstrade windan equal exchange
“we had no money so we had to live by barter”
verb
engage in the trade of
“he is merchandising telephone sets”
Synonymsmerchandiseturn in as payment or part payment for a purchase
“trade in an old car for a new one”
Synonymstrade inbe traded at a certain price or under certain conditions
“The stock traded around $20 a share”
exchange or give (something) in exchange for
do business; offer for sale as for one's livelihood
“She deals in gold”
“The brothers sell shoes”
Source: WordNet 3.1, Princeton University