Great Bear vs Ursa Major

Great Bear

name
  • A bright circumpolar asterism of the northern sky, said to resemble a large bear. It is part of the constellation Ursa Major and includes the stars Mizar, Dubhe, and Alkaid. 

Ursa Major

name
  • A large circumpolar constellation of the northern sky, said to resemble a bear. It includes the familiar asterism the Big Dipper and the stars Mizar, Dubhe, and Alkaid. 

How often have the words Great Bear and Ursa Major occurred in a corpus of books? (source: Google Ngram Viewer )