Don vs Lark

Don

name
  • A river in South Yorkshire, England, United Kingdom, on which Doncaster is situated. 

  • A river in Aberdeenshire council area, Scotland, United Kingdom, flowing 62 miles to the North Sea at Aberdeen. 

  • A river in Toronto, Ontario, Canada, named after the River Don in Yorkshire. 

  • A diminutive of the male given names Donald or Gordon. 

  • A minor river in Tyne and Wear, England, United Kingdom, which joins the Tyne at Jarrow. 

  • A river, the fifth-longest in Europe, in Tula Oblast, Lipetsk Oblast, Voronezh Oblast, Volgograd Oblast and Rostov Oblast, Russia. It flows 1870 kilometers (1160 miles) to the Sea of Azov. 

Lark

name
  • A river in England, on the border between Suffolk and Cambridgeshire. 

  • A male given name transferred from the surname, of occasional usage. 

  • A surname originating as a patronymic shortened from Larkin, a medieval diminutive of Laurence. 

  • A female given name from English from the lark bird. 

  • A surname transferred from the nickname, from lark as a byname or for a catcher and seller of larks. 

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