The term sales assistant is generally used for people who are trained to help with information about products, perhaps in a computer store or a camera store. The term salesperson is generally used for people who are paid by a commission such as a car salesman. The term sales clerk is generally used for people who are not as trained on product information but help with stocking, price ticketing, customer assistance and payments. The name for the card game is interchangeable. A footpath is a place where people have worn away the grass by frequently going back and forth. For example, there is a footpath across the grass that leads to the store. The word trail is often used for something that is marked with numbers or colours on trees. It takes you on a prescribed path. We have trails in Provincial Parks that take you through the woods to lookouts, rivers or picnic areas. We also have paved bike trails along lakefronts. If you are talking about trains, most people say fright cars. I have never heard the terms goods car or goods wagon. Hope this helps