Trading is the buying and selling of goods or shares. Trading hours, heavy trading, suspend trading.
In markets it means the daily business of buying and selling rather than long-term investing, and an exchange will suspend trading in a share when news is about to break, so that nobody deals on it before everybody has heard.
1nountradingThe buying and selling of goods or shares.
“The port grew rich from trading in spices and silk.”
trading is a business activity.