Google Trends is a search trends feature that can be used for comparative keyword research and to discover event-triggered spikes in keyword search volume. You can explore Google Trends by visiting the tool and seeing what searches are currently trending. You can also enter a search term into the search box at the top of the tool to see how search volume has varied for that term over time and in different locations.
As with all Google tools, they offer great overviews and information to get you started on understanding Google Trends as well as other insightful research they produce through their Think with Google site. To get started on how to see Google search trends and use the tool, start here.
There are several other great sites that offer great examples on how Google Trends can benefit your business and marketing planning. Here are a few of our favourites:
WordStream: What is Google Trends?