unclear vs unsettled

unclear

adj
  • Not having a clear idea; uncertain. 

  • Not easy to see or read; indecipherable or unreadable. 

  • Ambiguous; liable to more than one interpretation. 

  • Not clearly or explicitly defined. 

verb
  • To undo the process of clearing. 

unsettled

adj
  • Not in a steady condition, uncertain, subject to change. 

  • Unpaid. 

  • Not populated, having no settlers or other inhabitants. 

  • Disturbed, upset. 

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