retriever vs woofer

retriever

noun
  • A type of gun dog that retrieves game for a hunter. 

  • A tool for retrieving materials from the body after an operation. 

  • One who retrieves something. 

woofer

noun
  • A dog. 

  • A loudspeaker that produces low-frequency sound. 

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