Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1920 1921 - 1939 1940 - 1945 1946 - 1987 1988 - 2000 moron English
1800 - 1831 1832 - 1936 1937 - 1954 1955 - 1989 1990 - 2000 peters English

Run your own experiment! Raw data is available for download here.
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