緊張

1. Origins, structure, and basic meaning

• Structure: 緊張 (きんちょう) denotes tension or nervousness and forms the verb 緊張する.
• Basic usage: 人前で緊張する describes becoming nervous; 緊張で手が震える presents tension as the cause of trembling.

2. Common pitfalls and similar expressions

• State verb and causal で
  • Adding する predicates the experiencer's state, while nominal 緊張で explains the physical symptom.