commerce

business, commerce, trade, bargain, deal

这些名词均含“贸易，交易”之意。
business: 指包括售货、购货、换货在内的综合商业活动，方式可以是批发或零售。
commerce: 多指大规模的买卖或易货关系。
trade: 普通用词，含义广。既可指某种具体的商业又可指广泛的贸易。
bargain: 多指买卖双方通过谈判、协商就商品质量、数量、价格等项达成协议所成的生意。
deal: 口语用词，指买卖双方经过交涉达成协议成交。

名词 commerce:

1. transactions (sales and purchases) having the objective of supplying commodities (goods and services)
   同义词：commercialism, mercantilism
2. the United States federal department that promotes and administers domestic and foreign trade (including management of the census and the patent office); created in 1913
   同义词：Department of Commerce, Commerce Department, DoC
3. social exchange, especially of opinions, attitudes, etc.

1. The practices, methods, aims, and spirit of commerce or business.
   利润第一主义商业或营业的实践、方法、目的和精神
2. In the US, Washington is the seat of government and New York City is the chief seat of commerce.
   在美国，华盛顿是政府所在地，纽约是主要的商业中心。
3. He majored in international commerce in college.
   他大学时的专业是国际贸易。