Google Books Ngram Viewer

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

1800 - 1818 1819 - 1921 1922 - 1933 1934 - 1970 1971 - 2000 grey English
1800 - 1849 1850 - 1897 1898 - 1910 1911 - 1978 1979 - 2000 gray English

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