Google Books Ngram Viewer

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

1800 - 1821 1822 - 1848 1849 - 1859 1860 - 1946 1947 - 2000 seen to enter English
1800 - 1828 1829 - 1856 1857 - 1869 1870 - 1972 1973 - 2000 seen entering English

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