Google Books Ngram Viewer

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

1800 - 1899 1900 - 1979 1980 - 1987 1988 - 1994 1995 - 2000 enigmatic English
1800 - 1805 1806 - 1810 1811 - 1831 1832 - 1892 1893 - 2000 perspicuous English

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