deadbolt vs eared seal

deadbolt

noun
  • The part of the lock which is moved when the key is engaged. 

  • A kind of lock in which the bolt (moving portion) is held in position by the cylinder rather than by a spring and so cannot be retracted except by turning the cylinder. 

verb
  • To fasten or secure with a deadbolt. 

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 deadbolt and eared seal occurred in a corpus of books? (source: Google Ngram Viewer )