Google Books Ngram Viewer

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

1800 - 1832 1833 - 1972 1973 - 1983 1984 - 1996 1997 - 2008 pénis French
1800 - 1806 1807 - 1824 1825 1826 - 1936 1937 - 2008 phallus impudicus French

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