The Google Trends service
We can use Google Trends to gain some insight regarding which search keywords are trending in a particular region within a specific time span. This service that is packed with loads of visualized data provides you with valuable information about almost any keyword you choose.
Head to https://www.google.com/trends page and see the default page for these services:
Beneath the graphs there are an infinite loop of trending keywords, their related stories, and a snapshot of their trending graph over the past 10 years. This service does not limit you to the trending keywords of the moment and if you want to look for your OWN specific keywords and want to compare them to each other you can try the following query parameters (here we are comparing Clinton, Sanders, and Trump as an example):
https://www.google.com/trends/explore?date=all&q=Clinton,Sanders,Trump&hl=en-US
This will draw a couple of charts showing the result of those comparisons in multiple ways:
As I mentioned...