hang-up vs independence

hang-up

noun
  • An unforeseen obstacle to progress; a hitch or delay. 

  • An emotional difficulty or a psychological inhibition; a complex. 

independence

noun
  • The quality or state of being independent; lack of dependence; the state of not being reliant on, or controlled by, others. 

  • The state of having sufficient means for a comfortable livelihood. 

How often have the words hang-up and independence occurred in a corpus of books? (source: Google Ngram Viewer )