Ну вот, например, что говорит мой словарь:Originally Posted by Rtyom
1. A vendor is someone who sells things such as newspapers, cigarettes, or food from a small stall or cart.
2. The vendor of a house or piece of land is the person who owns it and is selling it. (LEGAL)
Хотя не знаю, кого именно по-русски вендором называют.