Google Trends shows how often a particular web search term is entered (or "Googled") relative to the total search volume across different regions.
This graph compares the search terms "Changement climatique," "réchauffement climatique," "Sécheresse," and "Émissions de carbone" because these were the four most often tweeted terms from the taxonomy.
The graphs below compare how popular the four terms are in different regions of the world. The higher the number, the more popular the search term is in that region.