Pharos vs Tail

Pharos

name
  • The Lighthouse of Alexandria, located on the island Pharos 

  • A small island off Alexandria where the Lighthouse of Alexandria was located. 

Tail

name
  • A Chinese constellation coinciding with the tail of Scorpius, one of the 28 lunar mansions and the tail of Azure Dragon. 

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