graybar hotel vs stalag

graybar hotel

name

  • jail, prison 

stalag

noun

  • A German prisoner-of-war camp, especially in World War II. 

  • A genre of Nazi exploitation Holocaust pornography in Israel that flourished in the 1950s and early 1960s. 

How often have the words graybar hotel and stalag occurred in a corpus of books? (source: Google Ngram Viewer )