Google Books Ngram Viewer

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

1900 - 1932 1933 - 1943 1944 1945 - 1988 1989 - 2008 gyro English
1900 - 1942 1943 - 1961 1962 - 1963 1964 - 1997 1998 - 2008 gyros English
1900 - 1914 1915 - 1956 1957 - 1961 1962 - 1990 1991 - 2008 gyroscope English

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