Google Books Ngram Viewer

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

1800 - 1844 1845 - 1939 1940 - 1948 1949 - 1986 1987 - 2000 norwegian English
1800 - 1857 1858 - 1936 1937 - 1947 1948 - 1986 1987 - 2000 polar bear English
1800 - 1954 1955 - 1979 1980 - 1983 1984 - 1997 1998 - 2000 fellatio English

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