Google Books Ngram Viewer

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

1800 - 1819 1820 - 1837 1838 - 1855 1856 - 1983 1984 - 2008 progress English
1800 - 1841 1842 - 1972 1973 - 1986 1987 - 1997 1998 - 2008 tradition English
1800 - 1827 1828 - 1991 1992 - 1998 1999 - 2003 2004 - 2008 innovation English

Run your own experiment! Raw data is available for download here.
© 2013 Google - Privacy & Terms - About Google - About Google Books - About Ngram Viewer