plangent vs ringing

plangent

adj
  • Having a loud, mournful sound. 

  • Beating, dashing, as waves. 

ringing

adj
  • Loud and clear. 

  • Made forcefully; powerful. 

noun
  • The sound of something that rings. 

  • The quality of being resonant. 

  • A technique used in the study of wild birds, by attaching a small, individually numbered, metal or plastic tag to their legs or wings. 

  • The theft of cars and illegally changing their identities for resale. 

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