dove vs piper

dove

noun
  • A greyish, bluish, pinkish colour like that of the bird. 

  • Term of endearment for one regarded as pure and gentle. 

  • A person favouring conciliation and negotiation rather than conflict. 

  • A pigeon, especially one smaller in size; a bird (often arbitrarily called either a pigeon or a dove or both) of more than 300 species of the family Columbidae. 

verb
  • Strong simple past tense of dive 

piper

noun
  • A baby pigeon. 

  • A bagpiper. 

  • A musician who plays a pipe. 

  • A common European gurnard (Trigla lyra), having a large head, with prominent nasal projection, and with large, sharp, opercular spines. 

  • A sea urchin (Cidaris cidaris) with very long spines, native to the American and European coasts. 

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