bulwark vs cushion

bulwark

verb
  • To fortify something with a wall or rampart. 

  • To provide protection of defense for something. 

noun
  • A defensive wall or rampart. 

  • A defense or safeguard. 

  • A breakwater. 

  • Any means of defence or security. 

  • The planking or plating along the sides of a nautical vessel above her gunwale that reduces the likelihood of seas washing over the gunwales and people being washed overboard. 

cushion

verb
  • To conceal or cover up, as under a cushion. 

  • To furnish with cushions. 

  • To absorb or deaden the impact of. 

  • To seat or place on, or as on a cushion. 

noun
  • a sufficient quantity of an intangible object (like points or minutes) to allow for some of those points, for example, to be lost without hurting one's chances for successfully completing an objective. 

  • A soft mass of material stuffed into a cloth bag, used for comfort or support; for sitting on, kneeling on, resting one's head on etc. 

  • A pad on which gilders cut gold leaf. 

  • The lip around a table in cue sports which absorbs some of the impact of the billiard balls and bounces them back. 

  • A mass of steam in the end of the cylinder of a steam engine to receive the impact of the piston. 

  • An engraver's pad. 

  • Money kept in reserve. 

  • The pillow used in making bone lace. 

  • A pad supporting a woman's hair. 

  • The rubber of an electrical machine. 

  • The dancer in the cushion dance who currently holds the cushion, or the dance itself. 

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