Applications for Education.
As I pointed out in the video above, the Ngram Viewer can offer a great way to start a research study activity for students. Have them go into a couple of words then take a look at the graph to determine peaks and valleys in the frequency of the words use. Then ask them to attempt to identify what would have caused those words to be utilized more or less frequently at various periods in history.

Ngram Viewer is a search tool that trainees can utilize to explore the usage of words and names in books released between 1800 and 2019. The Ngram Viewer shows users a graph highlighting the very first look of a word or name in literature and the frequency with which that word or name appears in literature because 1800. The Ngram Viewer will let you compare the use of several words or names in one graph.

The Ngram Viewer will let you compare making use of several words or names in one chart. The example that I provide in this video is to compare making use of the terms “National Parks,” “National Forests,” and “National Forest Service.” By taking a look at the Ngram Viewer for those terms I can see that they begin to appear more often around 1890, have a lull in the 1940s and 1950s, and after that appear more frequently again in the 1960s..
Ngram Viewer is based upon books indexed in Google Books. That is why listed below every graph created by Ngram Viewer you will find a list of books about each of your search terms. Those books are arranged by date..
A 3rd element of Ngram Viewer to note is that it deals with multiple languages including English, French, Chinese, German, Italian, Russian, Hebrew, and Spanish..

By the way, the book that I discussed in the video is That Wild Country by Mark Kenyon..

Googles.
Ngram Viewer is a search tool that students can utilize to explore using words and names in books released between 1800 and 2019. The Ngram Viewer reveals users a graph illustrating the very first look of a word or name in literature and the frequency with which that word or name appears in literature given that 1800. The graph is based on the books and regulars that are indexed in Google Books.