continent vs spouseless

continent

noun
  • Each of the main continuous land-masses on the earth's surface, now generally regarded as seven in number, including their related islands, continental shelves etc. 

adj
  • Exercising self-restraint; controlled, temperate with respect to one's bodily needs or passions, especially sex, urination and/or defecation. 

  • Not interrupted; connected; continuous. 

spouseless

adj
  • Without a spouse; unmarried. 

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