nonsalt vs saline

nonsalt

adj

  • Not salt. 

saline

adj

  • Resembling salt. 

  • Containing salt; salty. 

noun

  • A salt spring; a place where salt water is collected in the earth. 

  • Water containing dissolved salt. 

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