Google Books Ngram Viewer

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

1800 - 1820 1821 - 1976 1977 - 1988 1989 - 1999 2000 - 2008 inequality English
1800 - 1811 1812 - 1823 1824 - 1865 1866 - 1965 1966 - 2008 injustice English
1800 - 1831 1832 - 1909 1910 - 1927 1928 - 1991 1992 - 2008 unfairness English

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