instantiate vs symbolize

instantiate

verb
  • To represent (a concept, theme, or principle) by an instance. 

  • To create an object (an instance) of a specific class. 

symbolize

verb
  • To use symbols; to represent ideas symbolically. 

  • To be symbolic of; to represent. 

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