cumbersome vs unmanageable

cumbersome

adj
  • Not easily managed or handled; awkward; clumsy. 

  • Burdensome or hindering, as if a weight or drag; vexatious 

  • Hard, difficult, demanding to handle or get around with. 

  • Inert, lumbering, slow in movement 

unmanageable

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

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