breed vs subclass

breed

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

  • To produce offspring sexually; to bear young. 

  • To arrange the mating of specific animals. 

  • To produce or obtain by any natural process. 

  • 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. 

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. 

subclass

verb
  • To cause (an object) to act as an instance of a subclass (by creating the desired subclass and instantiating an object of this subclass). 

  • (in object-oriented programming) To create a subclass of (some class). 

noun
  • A rank directly below class. 

  • A secondary class within a main class. 

  • An object class derived from another class (its superclass) from which it inherits a base set of properties and methods. 

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