Answers: A vendor is a character who sells stock like an Ice Cream merchant, or popcorn vendor, or those who put on the market cigarettes from a vending machine. This usually covers the vending machines and the stock but not the person who own them. If you have a spot at a local flea market or swap shop you would classify as a retailer. It usually covers loss by theft or damages.
Is not exist Vendor Insurance. If you are a trader and need coverage you will classified depend of your operation. And the holder that required evidence of insurance this will be included as Additional Insured - Vendors as per ISO Form CG2015. It's standard liability insurance, complete with product liability, usually near a "broad form vendor" endorsement added to it.
You can grasp it from your local agent.