celibate vs spouseless

celibate

adj
  • Not married. 

  • Abstaining from sexual relations and pleasures. 

verb
  • To practice celibacy 

noun
  • One who is not married, especially one who has taken a religious vow not to get married, usually because of being a member of a religious community. 

spouseless

adj
  • Without a spouse; unmarried. 

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