Google Trends is a search tool that allows you to discover trends in people’s search behaviour in Google search, Google Images, Google News, etc. It provides data related to keywords including search volume index and geographical information about internet or search engine users.
Although it is a great tool to gain insights about keyword or search trends, but Google itself claims in its disclaimer that data “may contain inaccuracies for a number of reasons, including data sampling issues and a variety of approximations that are used to compute results.”
Google Trends can be used to discover search trends to target a wide range of related audience.