evolve vs gild the lily

evolve

verb
  • To cause something to change or transform. 

  • 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. 

gild the lily

verb
  • To embellish or improve something unnecessarily. 

  • To add superfluous attributes to something. 

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