South American sea lion vs eared seal

South American sea lion

noun
  • A sea lion, Otaria flavescens, found on the Chilean, Peruvian, Uruguayan and Argentine coasts, with a very large head with an upturned snout. 

eared seal

noun
  • A seal belonging in the Otariidae family; a fur seal or a sea lion, differing from the true seals in having small, visible ears and the ability to walk on land. 

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