Shopping ad: Definition
A type of ad that features detailed information about specific products that you sell. Shopping ads can refer to Product Shopping ads, which feature just one product, or Showcase Shopping ads, which feature several related products.
Showcase Shopping ads are available in Australia, Canada, Germany, France, Ireland, India, New Zealand, Singapore, South Africa, the UK and the US. You can create Showcase Shopping ads using the new AdWords experience and the AdWords API. If you want to advertise individual products, take a look at Product Shopping ads
To create Shopping ads, you'll set up your product information in Google Merchant Center and create Shopping campaigns in AdWords.