Google Books Ngram Viewer

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

1750 - 1772 1773 - 1790 1791 - 1807 1808 - 1949 1950 - 2000 pity English
1750 - 1767 1768 - 1784 1785 - 1800 1801 - 1931 1932 - 2000 pitied English
1750 - 1767 1768 - 1797 1798 - 1810 1811 - 1959 1960 - 2000 compassion English

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