big-headedness vs vainglory

big-headedness

noun
  • The state or quality of being big-headed. 

vainglory

noun
  • Boastful, unwarranted pride in one's accomplishments or qualities. 

  • A regarding of oneself with undue favor. 

  • Vain, ostentatious display. 

  • Excessive vanity. 

verb
  • To boast; to act in a vain manner. 

How often have the words big-headedness and vainglory occurred in a corpus of books? (source: Google Ngram Viewer )