nauseant vs nauseous

nauseant

adj

  • Inducing nausea. 

noun

  • A substance that induces nausea. 

nauseous

adj

  • Causing nausea; sickening or disgusting. 

  • Afflicted with nausea; sick. 

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