deliberate vs serendipitous

deliberate

adj
  • Formed with deliberation; carefully considered; not sudden or rash. 

  • Of a person, weighing facts and arguments with a view to a choice or decision; carefully considering the probable consequences of a step; slow in determining. 

  • Done on purpose; intentional. 

  • Not hasty or sudden; slow. 

verb
  • To consider the reasons for and against anything; to reflect. 

  • To consider carefully; to weigh well in the mind. 

serendipitous

adj
  • by serendipity; by unexpected good fortune 

  • good, beneficial, favorable 

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