glebe vs terrane

glebe

noun
  • A piece of earth containing ore. 

  • In medieval Europe, an area of land, belonging to a parish, whose revenues contributed towards the parish expenses. 

  • A field or meadow. 

  • Turf; soil; ground; sod. 

terrane

noun
  • A block of the Earth's crust that differs from the surrounding material, and is separated from it by faults. 

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