solute vs troubled

solute

noun
  • Any substance that is dissolved in a liquid solvent to create a solution 

adj
  • Relaxed; hence, cheerful, merry. 

  • Able to be dissolved; soluble. 

  • Free; liberal; loose. 

  • Not adhering; loose. 

troubled

adj
  • anxious, worried, careworn. 

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