pen vs sea lion

pen

noun
  • The bullpen. 

  • Penitentiary, i.e. a state or federal prison for convicted felons. 

  • The internal cartilage skeleton of a squid, shaped like a pen. 

  • An enclosure (enclosed area) used to contain domesticated animals, especially sheep or cattle. 

  • A female swan. 

  • Penalty. 

  • A writer, or their style. 

  • Marks of ink left by a pen. 

  • A light pen. 

  • A wing. 

  • A tool, originally made from a feather but now usually a small tubular instrument, containing ink used to write or make marks. 

verb
  • To enclose in a pen. 

  • To write (an article, a book, etc.). 

sea lion

noun
  • A cow or bull transported by steamer from the ports of Texas. 

  • A steamer transporting cattle from the ports of Texas. 

  • A monster consisting of the upper part of a lion combined with the tail of a fish. 

  • A marine mammal of any of several genera in the family Otariidae (the eared seals). 

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