responsive vs unflappable

responsive

adj
  • using antiphons; antiphonal 

  • answering, replying or responding 

  • susceptible to the feelings of others 

  • automatically resizing and repositioning elements to fit the available space 

  • able to receive and respond to external stimuli 

unflappable

adj
  • Remaining composed and level-headed at all times; impossible to fluster; not becoming frustrated or irritated easily. 

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