The word "commercial" refers to anything related to commerce or trade, particularly as it pertains to businesses and their activities aimed at earning profit. It can describe products, transactions, or activities that are intended for sale or that are used to promote trade. In a broader sense, "commercial" can also encompass the concept of media or entertainment that is created primarily to make money, such as television commercials or commercial films.
The word "commercial" comes from the Latin word "commercium," which means "trade" or "commerce," composed of "com-" (meaning "together") and "merx" (meaning "merchandise" or "goods"). It was adopted into Middle English in the late 15th century.