cat's pyjamas vs living end

cat's pyjamas

noun
  • A highly sought-after and fancy example of something, usually referring to inanimate objects. 

living end

noun
  • The most extreme form of something or the final and most impactful development in a series of events — whether favorable or unfavorable 

How often have the words cat's pyjamas and living end occurred in a corpus of books? (source: Google Ngram Viewer )