Googles.
Ngram Viewer is a search tool that trainees can utilize to check out using words and names in books published in between 1800 and 2019. The Ngram Viewer reveals users a chart illustrating the first look of a word or name in literature and the frequency with which that word or name appears in literature considering that 1800. The graph is based on the books and periodicals that are indexed in Google Books.

The Ngram Viewer will let you compare the usage of multiple words or names in one graph. The example that I offer in this video is to compare using the terms “National Parks,” “National Forests,” and “National Forest Service.” By looking 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 then appear more regularly again in the 1960s..
Ngram Viewer is based upon books indexed in Google Books. That is why below every chart created by Ngram Viewer you will find a list of books about each of your search terms. Those books are set up by date..
A 3rd component of Ngram Viewer to keep in mind is that it works with numerous 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..

Ngram Viewer is a search tool that trainees can use to check out the usage of words and names in books released in between 1800 and 2019. The Ngram Viewer reveals users a graph showing 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 Ngram Viewer will let you compare the usage of several words or names in one chart.

Applications for Education.
As I discussed in the video above, the Ngram Viewer can offer a great way to start a research study activity for trainees. Have them go into a couple of words then examine the graph to determine peaks and valleys in the frequency of the words usage. Then ask them to attempt to determine what would have triggered those words to be utilized basically frequently at various durations in history.