antenna vs earphones

antenna

noun
  • An apparatus to receive or transmit electromagnetic waves and convert respectively to or from an electrical signal. 

  • The faculty of intuitive astuteness. 

  • The spar to which a lateen sail is attached, which is then hoisted up the mast. 

  • A feeler organ on the head of an insect, crab, or other animal. 

  • A fragment of an oligosaccharide 

earphones

noun
  • A pair of small loudspeakers worn inside each outer ear or covering all or part of the ear, without a connecting band worn over head. 

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