celibacy vs singleness

celibacy

noun
  • Abstaining from marriage; the state of being unmarried. 

  • Abstinence from sexual relations. 

singleness

noun
  • The property of being single. 

  • The result or product of being single. 

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