devotion vs fealty

devotion

noun
  • The act or state of devoting or being devoted. 

  • Feeling of strong or fervent affection; dedication 

  • Religious veneration, zeal, or piety. 

  • A prayer (often found in the plural) 

fealty

noun
  • The oath by which this obligation was assumed. 

  • Fidelity to one's lord or master; the feudal obligation by which the tenant or vassal was bound to be faithful to his lord. 

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