lotophagous vs unflappable

lotophagous

adj
  • Relating to the Lotophagi (lotus eaters) 

unflappable

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

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