My mistake though was to think that US americans used it as a verb, equivalent to shopping.golyplot wrote:After thinking about it more, I don't think "market" is outdated, it just refers to a different thing than "store".
A market is a place where multiple people come to buy and sell things. Often it's outside, with people setting up stalls to sell their wares. A store is a single business run indoors. Of course, to confuse things, some stores are named Farmers' Market, even though the farmers don't physically come to sell their stuff and it's really just a store. Also, grocery stores are often called supermarkets for some reason.
I think I got that from a TV show (competing families, attempting to live as pioneers would have done), my memory tells me a lady said something like "...you shouldn't do your marketing [meaning shopping] when you're hungry"