The word 苦楚 is formed by combining two characters, 苦 and 楚, each contributing to the overall meaning of suffering. 苦 primarily means "bitter" or "painful", denoting physical or emotional hardship. 楚, in this context, conveys "pain" or "distress", often associated with sharp or clear suffering. When joined, they create a compound where both elements reinforce the notion of intense misery or anguish, resulting in a word that signifies profound suffering.