trade

engage in the trade of

the skilled practice of a practical occupation

“he learned his trade as an apprentice”

be traded at a certain price or under certain conditions

“The stock traded around $20 a share”

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”

an equal exchange

steady winds blowing from east to west above and below the equator

“they rode the trade winds going west”

people who perform a particular kind of skilled work

“as they say in the trade”

the business given to a commercial establishment by its customers

a particular instance of buying or selling

“I had no further trade with him”

turn in as payment or part payment for a purchase

“trade in an old car for a new one”

exchange or give (something) in exchange for