Google Books Ngram Viewer

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

1800 - 1882 1883 - 1954 1955 - 1962 1963 - 1987 1988 - 2000 amables palabras Spanish
1800 - 1904 1905 - 1942 1943 - 1949 1950 - 1987 1988 - 2000 palabras amables Spanish

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