evolve vs modify

evolve

verb
  • To change; transform. 

  • Of a population, to acquire or develop (a trait) in the process of biological evolution. 

  • To give off (gas, such as oxygen or carbon dioxide during a reaction). 

  • To move in regular procession through a system. 

  • To come into being; develop. 

  • Of a trait, to develop within a population via biological evolution. 

  • Of a population, to change genetic composition over successive generations through the process of evolution. 

  • To cause something to change or transform. 

modify

verb
  • To change part of. 

  • To set bounds to; to moderate. 

  • To qualify the meaning of. 

  • To be or become modified. 

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