rind vs superficies

rind

noun
  • The gall, the crust, the insolence; often as "the immortal rind" 

  • tree bark 

  • A hard, tough outer layer, particularly on food such as fruit, cheese, etc 

  • An iron support fitting used on the upper millstone of a grist mill. 

verb
  • To remove the rind from. 

superficies

noun
  • The surface (of something immaterial, especially of the mind or soul). 

  • The area of a two-dimensional surface. 

  • A building intimately associated with the land on which it is built. 

  • The visible, external surface of a body. 

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