Then I compared the mainly obsolete legal term demurrer (blue) with its replacement, motion to dismiss (for failure to state a claim) (red) between the years 1900 and 2008 from the corpus of American English. I received the following result:
I'm sure the possibilities of this are endless. Of course there are always caveats to a tool like this, such as different meanings for the same word and that pesky medial s (that is sometimes mistaken for an "f"). Nonetheless, it is amusing.
To try it go to: http://www.ngrams.googlelabs.com/
For more information on the Ngram Viewer go to: http://www.ngrams.googlelabs.com/info.