chaste vs unmoral

chaste

adj
  • Decent, modest, morally pure. 

  • Virginal, innocent, having had no sexual experience. 

  • Abstaining from immoral or unlawful sexual intercourse. 

  • Austere, simple, undecorative. 

unmoral

adj
  • Not applicable for moral consideration. 

  • Not moral. 

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