development vs senescence

development

noun
  • The process by which a mature multicellular organism or part of an organism is produced by the addition of new cells. 

  • The process of developing; growth, directed change. 

  • A project consisting of one or more commercial or residential buildings. 

  • The active placement of the pieces, or the process of achieving it. 

  • The expression of a function in the form of a series. 

  • The building of such a project. 

  • Something which has developed. 

  • The application of new ideas to practical problems (cf. research). 

  • The process by in which previous material is transformed and restated. 

  • The second section of a piece of music in sonata form, in which the original theme is revisited in altered and varying form. 

senescence

noun
  • Condition when the cell ceases to divide. 

  • Old age; accumulated damage to macromolecules, cells, tissues and organs with the passage of time. 

  • The state or process of ageing, especially in humans; old age. 

  • Fruit senescence, leading to ripening of fruit. 

  • Ceasing to divide by mitosis because of shortening of telomeres or excessive DNA damage. 

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