pretentiously vs spontaneously

pretentiously

adv
  • In a manner with unwarranted claim to importance or distinction. 

  • Ostentatiously; in a manner intended to impress others. 

  • In a manner demanding of skill or daring. 

spontaneously

adv
  • In a spontaneous manner; naturally; voluntarily. 

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