Applications for Education.
As I pointed out in the video above, the Ngram Viewer can offer an excellent way to begin a research activity for students. Have them enter a couple of words then examine the chart to identify peaks and valleys in the frequency of the words usage. Then ask to try to determine what would have triggered those words to be utilized more or less regularly at various periods in history.

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

Googles.
Ngram Viewer is a search tool that trainees can use to check out making use of words and names in books published between 1800 and 2019. The Ngram Viewer shows users a graph highlighting the 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 chart is based on the books and periodicals that are indexed in Google Books.

The Ngram Viewer will let you compare the use of multiple words or names in one graph. The example that I give up this video is to compare using 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 frequently around 1890, have a lull in the 1940s and 1950s, and after that appear more frequently once again in the 1960s..
Ngram Viewer is based upon books indexed in Google Books. That is why listed below every chart created by Ngram Viewer you will discover a list of books about each of your search terms. Those books are set up by date..
A 3rd element of Ngram Viewer to note is that it works with numerous languages including English, French, Chinese, German, Italian, Russian, Hebrew, and Spanish..

Ngram Viewer is a search tool that trainees can utilize to explore the use of words and names in books released in between 1800 and 2019. The Ngram Viewer shows users a chart illustrating the first appearance of a word or name in literature and the frequency with which that word or name appears in literature given that 1800. The Ngram Viewer will let you compare the use of numerous words or names in one chart.