Google Books Ngram Viewer

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

1800 - 1822 1823 - 1922 1923 - 1940 1941 - 1979 1980 - 2000 idea English
1800 - 1818 1819 - 1875 1876 - 1892 1893 - 1974 1975 - 2000 idea of English

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