day vs generation

day

noun
  • A specified time or period; time, considered with reference to the existence or prominence of a person or thing; age; time. 

  • Rotational period of a planet (especially Earth). 

  • Any period of 24 hours. 

  • The part of a day period which one spends at one’s job, school, etc. 

  • A period from midnight to the following midnight. 

  • A period of contention of a day or less. 

  • A 24-hour period beginning at 6am or sunrise. 

  • Part of a day period between sunrise and sunset where one enjoys daylight; daytime. 

verb
  • To spend a day (in a place). 

generation

noun
  • 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. 

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

  • 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. 

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