unmanageable vs yielding

unmanageable

adj
  • Not manageable; not readily submitting to handling or management; not easily restrained, governed, or directed 

yielding

adj
  • Docile, or inclined to give way to pressure. 

noun
  • A concession. 

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