caput vs upside

caput

noun
  • The top or superior part of a thing. 

  • A knob-like protuberance or capitulum. 

  • The head. 

  • The council or ruling body of the University of Cambridge prior to the constitution of 1856. 

upside

noun
  • The highest or uppermost side or portion of something. 

  • An upward tendency, especially in a financial market etc. 

  • A favourable aspect of something that also has an unfavourable aspect. 

prep
  • On the top of. 

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