elliptical vs encircling

elliptical

adj
  • Elliptic. 

  • Concise, condensed. 

  • In a shape of, or reminding of, an ellipse; oval. 

  • Of, or showing ellipsis; having a word or words omitted. 

noun
  • An elliptical trainer. 

  • An elliptical galaxy. 

encircling

adj
  • enclosing, skirting 

noun
  • encirclement 

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