gravitationally challenged vs plus-size

gravitationally challenged

adj
  • Fat. 

  • Of a person, having a poor sense of balance; subject to intervals of dizziness. 

plus-size

adj
  • Overweight. 

  • Designed to fit an overweight person. 

How often have the words gravitationally challenged and plus-size occurred in a corpus of books? (source: Google Ngram Viewer )