ooidal vs ovular

ooidal

adj

  • Oolitic. 

  • Egg-shaped. 

ovular

adj

  • Of or pertaining to an oval. 

  • Of or pertaining to an ovule. 

noun

  • A seminar for feminists. 

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