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: "_END_"

Search in Google Books:

1950 - 1960 1961 - 1974 1975 - 1976 1977 - 1999 2000 - 2008 sex identity English
1950 - 1978 1979 - 1994 1995 - 1996 1997 - 2005 2006 - 2008 gender identity English

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