Google Books Ngram Viewer

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

1800 - 1829 1830 - 1949 1950 - 1963 1964 - 1980 1981 - 2000 a union English
1800 - 1897 1898 - 1933 1934 - 1941 1942 - 1983 1984 - 2000 a syndicate English

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