Google Correlate is a website that allows its users to determine patterns in the use of search terms over time and compare it according to specific regions. It looks like Google Trends but with slight differences. Google Correlate can help you determine some extra info about your search terms such as which ones are more popular in winter, which ones were most likely to be issued in 2005,...etc.
According to Google Correlate some search words tend to have much popularity in certain states of America rather than in others.So for users to be able to find terms whose pattern of activity across the US reflects their own US states dataset, they need to enter their data using the search bar in the main page and hit " search correlations".
If you are interested in tracking the trending search terms then you can use Google Correlate to stay up-to-date.
Watch this video to learn more about Google Correlate.