kibbutz vs outpost

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. 

outpost

noun
  • A military post stationed at a distance from the main body of troops. 

  • An outlying settlement. 

  • The body of troops manning such a post. 

  • A square protected by a pawn that is in or near the enemy's stronghold. 

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