hamlet vs kibbutz

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. 

kibbutz

noun
  • A community, usually an agricultural one in Israel, based on a high level of social and economical sharing, equality, direct democracy and tight social relations. 

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