generation vs propagation

generation

noun
  • The act of creating something or bringing something into being; production, creation. 

  • Race, family; breed. 

  • A set stage in the development of computing or of a specific technology. 

  • The formation or production of any geometrical magnitude, as a line, a surface, a solid, by the motion, in accordance with a mathematical law, of a point or a magnitude, by the motion of a point, of a surface by a line, a sphere by a semicircle, etc. 

  • A version of a form of pop culture which differs from later or earlier versions. 

  • The act of creating a living creature or organism; procreation. 

  • The average amount of time needed for children to grow up and have children of their own, generally considered to be a period of around thirty years, used as a measure of time. 

  • A single step or stage in the succession of natural descent; a rank or degree in genealogy, the members of a family from the same parents, considered as a single unit. 

  • A group of people born in a specific range of years and whose members can relate culturally to one another. 

  • A copy of a recording made from an earlier copy and thus further degraded in quality. 

propagation

noun
  • the act of propagating, especially the movement of a wave 

  • winning new converts 

  • some degree of success in the spread of propaganda 

  • the dissemination of something to a larger area or greater number 

  • the elongation part of transcription 

  • the multiplication or natural increase in a population 

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