Google Books Ngram Viewer

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

1800 - 1855 1856 - 1906 1907 - 1918 1919 - 1982 1983 - 2000 gray English
1800 - 1818 1819 - 1914 1915 - 1930 1931 - 1970 1971 - 2000 grey English

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