beneficial vs unmanageable

beneficial

noun
  • Something that is beneficial. 

adj
  • Helpful or good to something or someone. 

  • Relating to a benefice. 

unmanageable

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

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