Capricorn vs Capricornus

Capricorn

name

  • Capricornus 

  • The zodiac sign for the goat, ruled by Saturn and covering December 22 – January 20 (tropical astrology) or January 15 – February 14 (sidereal astrology). 

noun

  • Someone with a Capricorn star sign. 

Capricornus

name

  • Capricorn 

  • a constellation of the zodiac supposedly shaped like a goat 

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