Google Trends is a tool which shows how often a particular search-term is entered relative to the total search-volume across various regions of the world, and in various languages.
The horizontal axis of the main graph represents time and the vertical is how often a term is searched for relative to the total number of searches, globally. Below the main graph, popularity is broken down by countries, regions, cities and language.
If your business relies on the most up-to-date news and content that is being heavily searched for, then try using Google Trends.
This tool allows you to see the most searched for keywords, and then breaks the data down to provide you with some more details. You can see when the search traffic spiked, and if the keyword will keep trending up in popularity.