glebe vs polder

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. 

polder

noun
  • An area of ground reclaimed from a sea or lake by means of dikes. 

verb
  • To reclaim an area of ground from a sea or lake by means of dikes. 

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