Never take any word for granted until you look it up. Latin commercium . The interchange or mutual change of goods, productions, or property of any kind, between nations or individuals. A Dictionary of Law 1893 . All labor is commerce.
All transportation is commerce.
All intellect exchanges are commerce. All the above become commodities of commerce. Chattel personal . A mortgage of or against personal or movable property. Merriam Webster's Dictionary of Law 1996.