3. What do you think of telemarketing? Telemarketing: the advertising or selling of goods or services by telephone. (Cambridge)

6. Hypermarket: the pros and cons Hypermarket: a very large shop, usually outside the center of town. (Cambridge)

11. street vendor Example: For the past few months she's been working as a street vendor, selling fruit and veg.

15. vending machine A machine from which you can buy small things such as cigarettes, drinks and sweets by putting coins into it. Example: The vending machine in the office dispenses really tasteless coffee.