dealer
noun
1 he set up in business as an antique dealer:
trader, tradesman, tradesperson, merchant, salesman, saleswoman, salesperson, seller, buyer, buyer and seller, marketeer, merchandiser, distributor, supplier, vendor, shopkeeper, retailer, wholesaler, purveyor, marketer, trafficker, pedlar, hawker;
British stockist;
North American storekeeper;
informal pusher, runner, fence;
dated chandler, shopman;
archaic chapman.
dealer Oxford Dictionary of English