raze vs superstruct

raze

verb
  • To destroy; to strike out of existence; to obliterate. 

  • To scrape as if with a razor. 

  • To demolish; to level to the ground. 

noun
  • A swinging fence in a watercourse to prevent cattle passing through. 

superstruct

verb
  • To build over or upon (another structure); to erect upon (a foundation). 

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