Google Books Ngram Viewer

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

1880 - 1890 1891 - 1900 1901 - 1957 1958 - 1999 2000 - 2019 mars English
1880 - 1929 1930 - 1977 1978 - 1983 1984 - 1998 1999 - 2019 marx English

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