brackish vs motionless

brackish

adj
  • Repulsive 

  • Distasteful; unpleasant; not appealing to the taste. 

  • Salty or slightly salty, as a mixture of fresh and sea water, such as that found in estuaries. 

motionless

adj
  • at rest, stationary, immobile, not moving. 

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