Google Books Ngram Viewer

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

1900 - 1920 1921 - 1941 1942 - 1945 1946 - 1972 1973 - 2000 davenport English
1900 - 1917 1918 - 1996 1997 1998 1999 - 2000 futon English

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