The word "stock-trade" refers to the act of buying or selling shares of stock on a stock exchange. Synonyms for this term include "stock market trading," "stock exchange transactions," "equity trading," and "securities trading." Other related terms include "day trading," which refers to buying and selling stocks within a single trading day, and "investing," which involves buying stocks as a long-term investment. No matter the term used, the act of stock trading can be a complex and risky endeavor, requiring careful research and analysis to make informed decisions about buying, selling, or holding stocks.