overtop vs vault

overtop

verb
  • To be higher than; to rise over the top of. 

  • To place too many toppings on. 

adv
  • Over the top. 

vault

verb
  • To jump or leap over. 

  • To build as, or cover with a vault. 

noun
  • A piece of apparatus used for performing jumps. 

  • Any cellar or underground storeroom. 

  • An arched masonry structure supporting and forming a ceiling, whether freestanding or forming part of a larger building. 

  • Any archive of past content. 

  • Any arched ceiling or roof. 

  • Anything resembling such a downward-facing concave structure, particularly the sky and caves. 

  • The space covered by an arched roof, particularly underground rooms and (Christianity, obsolete) church crypts. 

  • An encrypted digital archive. 

  • The secure room or rooms in or below a bank used to store currency and other valuables; similar rooms in other settings. 

  • An act of vaulting, formerly (chiefly) by deer; a leap or jump. 

  • Any burial chamber, particularly those underground. 

  • An event or performance involving a vaulting horse. 

  • A gymnastic movement performed on this apparatus. 

  • Synonym of volte: a circular movement by the horse. 

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