indistinct vs unformed

indistinct

adj
  • not clearly defined or not having a sharp outline; faint or dim 

  • hazy or vague 

  • difficult to understand through being muffled or slurred 

unformed

adj
  • Not having a definite form; shapeless; amorphous. 

  • Not well developed. 

  • Not formed or made. 

  • Not grouped into any constellation. 

  • Decomposed, or resolved into parts; having the form destroyed. 

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