mantle vs shield

mantle

verb
  • To become covered or concealed. 

  • To climb over or onto something. 

  • To spread like a mantle (especially of blood in the face and cheeks when a person flushes). 

  • To cover or conceal (something); to cloak; to disguise. 

noun
  • A figurative garment representing authority or status, capable of affording protection. 

  • The layer between the Earth's core and crust. 

  • A penstock for a water wheel. 

  • A mantling. 

  • A gauzy fabric impregnated with metal nitrates, used in some kinds of gas and oil lamps and lanterns, which forms a rigid but fragile mesh of metal oxides when heated during initial use and then produces white light from the heat of the flame below it. (So called because it is hung above the lamp's flame like a mantel.) 

  • The back of a bird together with the folded wings. 

  • The zone of hot gases around a flame. 

  • The cerebral cortex. 

  • The outer wall and casing of a blast furnace, above the hearth. 

  • Anything that covers or conceals something else; a cloak. 

  • A piece of clothing somewhat like an open robe or cloak, especially that worn by Orthodox bishops. (Compare mantum.) 

  • The body wall of a mollusc, from which the shell is secreted. 

  • A fireplace shelf; Alternative spelling of mantel 

shield

verb
  • To shelter; to protect oneself. 

  • To protect, to defend. 

  • to protect from the influence of 

noun
  • A large expanse of exposed stable Precambrian rock. 

  • A wide and relatively low-profiled volcano, usually composed entirely of lava flows. 

  • Parts at the front and back of a vehicle which are meant to absorb the impact of a collision 

  • A broad piece of defensive armor, held in hand, formerly in general use in war, for the protection of the body. 

  • One who protects or defends. 

  • A spot resembling, or having the form of a shield. 

  • A sign or symbol, usually containing numbers and sometimes letters, identifying a highway route. 

  • A framework used to protect workmen in making an adit under ground, and capable of being pushed along as excavation progresses. 

  • The escutcheon or field on which are placed the bearings in coats of arms. 

  • A field of energy that protects or defends. 

  • In lichens, a hardened cup or disk surrounded by a rim and containing the fructification, or asci. 

  • A police badge. 

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