breed vs clustering

breed

noun
  • A race or lineage; offspring or issue. 

  • A group of people with shared characteristics. 

  • All animals or plants of the same species or subspecies. 

verb
  • To produce offspring sexually; to bear young. 

  • To arrange the mating of specific animals. 

  • To produce or obtain by any natural process. 

  • To have birth; to be produced, developed or multiplied. 

  • To yield or result in. 

  • To ejaculate inside; to attempt to impregnate. 

  • Of animals, to mate. 

  • To take care of in infancy and through childhood; to bring up. 

  • To propagate or grow plants trying to give them certain qualities. 

  • To give birth to; to be the native place of. 

  • To educate; to instruct; to bring up 

  • To keep animals and have them reproduce in a way that improves the next generation’s qualities. 

clustering

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

  • 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. 

adj
  • Forming a cluster. 

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