Google Books Ngram Viewer

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

1800 - 1813 1814 - 1826 1827 - 1874 1875 - 1980 1981 - 2008 conversation English
1800 - 1810 1811 - 1822 1823 - 1833 1834 - 1959 1960 - 2008 converse English
1800 - 1955 1956 - 2001 2002 2003 - 2006 2007 - 2008 conversate English

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