力

1. Origins, structure, and basic meaning

• Structure: 力 is read as ちから and is a noun broadly covering physical strength and the ability to perform an action.
• Basic usage: Cooperation appears in 力を合わせる, while listening ability appears in 話を聞く力がある.

2. Common pitfalls and similar expressions

• Range from strength to ability
  • It applies not only to muscular force but also to capacities such as judgment, concentration, and communication.
• Difference from 能力
  • 能力 relatively objectively describes a person's or organization's capability, while 力 more broadly covers force, influence, and practical ability.