fastness vs fealty

fastness

noun
  • The quality or state of being strongly attached; firmness, secureness, tenacity. 

  • The ability of a dye to withstand fading. 

  • A fortified or secure place; a fortress, a stronghold. 

  • The quality or state of moving quickly; quickness, rapidity, swiftness. 

  • Something used to fasten or tie; a fastener or fastening. 

  • The quality or state of having an extravagant lifestyle or immoral habits. 

fealty

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

  • The oath by which this obligation was assumed. 

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