evaluate vs ponder

evaluate

verb
  • To draw conclusions from examining; to assess. 

  • To compute or determine the value of (an expression). 

  • To return or have a specific value. 

ponder

verb
  • To consider (something) carefully and thoroughly. 

  • To wonder, think of deeply. 

noun
  • A period of deep thought. 

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