allegiant vs inflexible

allegiant

adj
  • Steadfastly loyal, especially to a monarch or government. 

inflexible

adj
  • Not willing to change, e.g. one's opinion or habits. 

  • Not flexible; not capable of bending or being bent. 

  • Not able to be changed or adapted to circumstances. 

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