debatable vs unsure

debatable

adj

  • Open to debate; not fully proved or confirmed. 

  • Able to be debated; up for discussion. 

noun

  • A topic that is open to debate. 

unsure

adj

  • unstable or precarious 

  • uncertain 

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