heft vs overestimate

heft

verb
  • To lift up; especially, to lift something heavy. 

  • To make (a farm animal, especially a flock of sheep) accustomed and attached to an area of mountain pasture. 

  • To test the weight of something by lifting it. 

noun
  • Weight. 

  • Heaviness, the feel of weight; heftiness. 

  • A piece of mountain pasture to which a farm animal has become hefted (accustomed). 

  • Poor condition in sheep caused by mineral deficiency. 

  • The act or effort of heaving; violent strain or exertion. 

  • Influence; importance. 

  • A number of sheets of paper fastened together, as for a notebook. 

  • An animal that has become hefted thus. 

  • A part of a serial publication. 

overestimate

verb
  • To judge or calculate too highly. 

noun
  • An estimate that is too high. 

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