public relations- noun
creating and maintenaning a good image with your customers and the public:
After the recent scandal, the company has started a new advertising campaign to help improve public relations.

Brand identity- noun
How a company wants the consumer to see its product. The company may want the customer to see the product as a luxury item or perhaps a cheaper item.

Brand image -noun
How a company's product is perceived (seen) by the consumer.

Banner ad- noun
An advertisment seen on the internet, often in the form of a rectangle at the top of an internet page. It has a large headline and sometimes moving or flashing colours and images.
They placed a banner ad at the top of each page.

Circulation- noun
About a newspaper or magazine - the average number of copies distributed. For billboards and posters outdoors - the number of people who will potentially see it.
The magazine has a weekly circulation of 50,000 copies.