個人差

1. Origins, structure, and basic meaning

• Structure: 個人差 is read as こじんさ and is a noun for differences in response, ability, pace, or another trait among individuals under comparable conditions.
• Basic usage: Major differences in how people perceive something appear in 感じ方に個人差がある, while comparing improvement with such differences in mind appears in 個人差を考えて比べる.

2. Common pitfalls and similar expressions

• Variation between people
  • It identifies differences in degree, response, or outcome among people rather than a change within one person.
• Difference from 個性
  • Unlike the word for each person's distinctive character or qualities, this term focuses on variation observed under a shared point of comparison.