lanceolate vs sharp-edged

lanceolate

adj
  • Of a class of knapped stone points, made without a stem, shoulders, notches, or other features that aid in attachment to a shaft. 

  • Having the general shape of a lance; much longer than wide, with the widest part lower than the middle and a pointed apex. 

noun
  • Any such artefact 

sharp-edged

How often have the words lanceolate and sharp-edged occurred in a corpus of books? (source: Google Ngram Viewer )