The Google Ngram Viewer is ‘a phrase-usage graphing tool.’ Based on scans of over 5.2 million books, it charts the yearly appearance of any n-grams (letter combinations) that you care to enter.
I’ve plotted incidences of the phrase ‘Great War’ against appearances of the phrase ‘First World War’ over the twentieth century. The result is much what I expected – though it’s interesting to see the dramatic rise of ‘First World War’ after 1935, as fears of a second increased. (click on the graph to see it enlarged).
Since this website possibly has a family audience, I shall not post the graphs I made to track the usage of very rude words over the century. But try it for yourself. It’s fun.
Update, half an hour later:
It’s just occurred to me that one can possibly use this tool to track the reputation of writers. This graph suggests quite a bit about how the popularity of ‘Edith Sitwell’ and ‘Siegfried Sassoon’ fluctuated over the twentieth century:
This one tracks the relative fortunes of Siegfried Sassoon and Wilfred Owen:
And this shows the inexorable triumph of Virginia Woolf over Arnold Bennett:
But now I really ought to stop doing this, and get on with something more useful.