hefty vs pyknic

hefty

adj
  • Strong; bulky. 

  • Heavy, strong, vigorous, mighty, impressive. 

  • Heavy, weighing a lot. 

  • Large. 

  • Possessing physical strength and weight; rugged and powerful; powerfully or heavily built. 

pyknic

adj
  • short and stout; endomorphic 

noun
  • A short, thickset person characterised by thick neck, large abdomen and relatively short limbs; a endomorph. 

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