Lena vs Lena River

Lena

name
  • A municipality in Asturias, Spain. 

  • A female given name from Ancient Greek. 

  • A major river in Russia, flowing 2,734 miles from the mountains by the lake Baikal to the Arctic Ocean. 

  • A river in Trøndelag, Norway 

Lena River

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