Google Books Ngram Viewer

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

1800 - 1919 1920 - 1932 1933 - 1936 1937 - 1980 1981 - 2000 tomato catchup English
1800 - 1911 1912 - 1983 1984 - 1989 1990 - 1995 1996 - 2000 tomato ketchup English
1800 - 1895 1896 - 1908 1909 - 1913 1914 - 1975 1976 - 2000 tomato catsup English

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