The word "ad" is short for "advertisement." Ads appear in newspapers, in magazines, on TV (called "commercials"), on the internet, and in many other places where a business or an organization is trying to get the attention of the general public.
During the election season, there are a lot of political ads on TV.
Banner ads and ad links are popular on the internet.
You can buy ad space in a newspaper to help promote your business.
There’s an ad in the newspaper for a sale at Macy’s.
People who work for ad agencies are in the business of advertising.
My neighbor found his job through the help wanted ads online.
Restaurants that need new workers often put ads in the newspaper.
There are ads on this website. They help to keep the website free.