What is "Google Suggest" or "Autocomplete"?

Google Suggest or Autocomplete provides the keywords related to a particular topic. Google Suggest suggests you completions of the search string you are typing, based on other people's search queries.

Google Suggest is the name of Google's auto-complete function. If a user enters a letter or a word in Google's search field, they are automatically shown associated terms in a drop down menu. These suggestions are generated based on the most frequently searched terms.

Google suggest is a part of the auto complete function of google search engine. When any user enters a word or some letters over the search field google shows many associated terms to him /her in a drop down menu.Such suggestions are a collection of the most frequently search terms over the google search engine.