実績

1. Origins, structure, and basic meaning

• Structure: 実績(じっせき) means an achievement, performance record, or result actually produced.
• Basic usage: It is used for sales results or achievements in research and work. Typical patterns are 販売実績を確認する and 研究実績がある.

2. Common pitfalls and similar expressions

• Focus on demonstrated results
  • It refers not to a plan or possibility but to results already demonstrated through figures, records, or accomplishments.
• Difference from 経験
  • 経験(けいけん) is the fact of having done or undergone something, while 実績 is the achievement produced through that activity.