苦悩

1. Origins, structure, and basic meaning

• Structure: 苦悩 (くのう) is deep anguish over a difficult problem. It appears as an experience and as feelings confided.
• Basic usage: A protagonist agonizes between family and a dream; a speaker first reveals long-held torment to a friend.

2. Common pitfalls and similar expressions

• Anguish over a choice and long-concealed torment
  • 苦悩した is an experience; 苦悩を打ち明ける is disclosed content. It is deeper and more sustained than brief worry.