Google Books Ngram Viewer

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

To search for part of speech tags, surround the parts of speech with underscores: "_INF_", "_INF_", "_INF_"

Search in Google Books:

1880 - 1950 1951 - 1984 1985 - 1989 1990 - 2001 2002 - 2008 infrared English
1880 - 1921 1922 - 1946 1947 - 1952 1953 - 1994 1995 - 2008 infra red English

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