Google Books Ngram Viewer

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

1820 - 1930 1931 - 1957 1958 - 1962 1963 - 1999 2000 - 2008 octopuses English
1820 - 1881 1882 - 1940 1941 - 1948 1949 - 1997 1998 - 2008 octopi English

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