brackish water vs saline

brackish water

noun
  • Water whose salinity falls between that of fresh water and that of seawater. 

saline

noun
  • Water containing dissolved salt. 

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

adj
  • Resembling salt. 

  • Containing salt; salty. 

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