fortuitously vs volitionally

fortuitously

adv
  • In a fortuitous manner; in a manner of happening by chance; coincidentally; accidentally. 

  • In a fortuitous manner; in a manner of happening by a lucky chance; luckily; fortunately. 

volitionally

adv
  • Willingly or decidedly. 

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