Google Books Ngram Viewer

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

1500 - 1752 1753 - 1789 1790 - 1803 1804 - 1946 1947 - 2008 republic English
1500 - 1794 1795 - 1943 1944 - 1954 1955 - 1996 1997 - 2008 democracy English

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