sellerWe'll need to talk to the seller and see if they'll accept your bid on the house.
salespersonThe shop was so busy that it took me ages to get the salesperson's attention.
salesmanHe was a used-car salesman.
saleswomanShe was the company's top saleswoman.
sales assistantUKCan you wave over a sales assistant? I have a question about this bracelet.
shop assistantUKI worked as a shop assistant during university.
assistantUKThe assistant helped me choose a scarf for my wife.
salesclerkUSThe salesclerk was really helpful.
clerkUSShe's a grocery clerk.
sales repI used to be a sales rep for a pharmaceutical company.
repinformalIs the pharma rep coming into our practice today?
pitchmanUSinformalThe dealership's pitchman followed us around the car lot.
retailerThe electronics retailer filed for bankruptcy this week.
vendorWe buy our all our office supplies from the same vendor.
merchantHis grandfather was a wine merchant.
wholesalerThe restaurant bought their coffee from a wholesaler.