encircling vs ovoid

encircling

noun

  • encirclement 

adj

  • enclosing, skirting 

ovoid

noun

  • Something that is oval in shape. 

adj

  • Egg-shaped; shaped like an oval, but more tapered at one end; ovate. 

  • Shaped like an oval. 

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