bluster vs passivity

bluster

verb
  • To act or speak in an unduly threatening manner. 

  • To blow in strong or sudden gusts. 

  • To speak or protest loudly. 

noun
  • A gust of wind. 

  • Pompous, officious talk. 

  • Fitful noise and violence. 

passivity

noun
  • A lack of initiative. 

  • The state of being passive. 

  • Submissiveness. 

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