mardy vs unflappable

mardy

noun
  • A sulky, whiny mood; a fit of petulance. 

adj
  • Non-cooperative, bad-tempered or terse in communication; grumpy. 

  • Sulky or whining. 

unflappable

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

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