nebulous vs ovular

nebulous

adj
  • Vague or ill-defined. 

  • In the form of a cloud or haze; hazy. 

  • Relating to a nebula or nebulae. 

ovular

adj
  • Of or pertaining to an oval. 

  • Of or pertaining to an ovule. 

noun
  • A seminar for feminists. 

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