clustering vs cooperative

clustering

adj
  • Forming a cluster. 

noun
  • The undesirable contiguous grouping of elements in a hash table. 

  • A grouping of a number of similar things. 

  • A prewriting technique consisting of writing ideas down on a sheet of paper around a central idea within a circle, with the related ideas radially joined to the circle using rays. 

  • The grouping of a population based on ethnicity, economics or religion. 

cooperative

adj
  • Relating to a cooperative or cooperatives. 

  • Ready to work with another person or in a team; ready to cooperate. 

  • Involving cooperation between individuals or parties. 

noun
  • A type of company that is owned partially or wholly by its employees, customers or tenants. 

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