piper vs settee

piper

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

  • A bagpiper. 

  • A musician who plays a pipe. 

  • A baby pigeon. 

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

settee

noun
  • A vessel with a very long, sharp prow, carrying two or three masts with lateen sails, used in the Mediterranean. 

  • A long seat with a back, made to accommodate several persons at once; a sofa. 

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