Google Books Ngram Viewer

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

1800 - 1811 1812 - 1827 1828 - 1888 1889 - 1982 1983 - 2005 smooths English
1800 - 1832 1833 - 1966 1967 - 1984 1985 - 1998 1999 - 2005 smoothes English

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