hamlet vs small town

hamlet

noun
  • A small village or a group of houses. 

  • Any of the fish of the genus Hypoplectrus in the family Serranidae. 

  • A village that does not have its own church. 

small town

noun
  • A small (generally rural) town. 

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