"Usage statistics from English books, according to Google Ngram Viewer. The spike in the 1700s can be explained by modern OCR technology reading the Latin long s as an f."
Grizlason September 21 2011 18:54:12
Some words are loosing popularity: tomfoolery hatred love
These ones I found interesting: war - WW1 and 2 are clearly visible. Might the first spike be the American revolutionary war? justice - Guess our interest in justice has been waning since the French revolution