累積

1. Origins, structure, and basic meaning

• Structure: 累積 means an amount or effect building up through repeated additions, and can be used as 累積する.
• Basic usage: It describes accumulated results, such as fatigue built up over time or points earned on several occasions.

2. Common pitfalls and similar expressions

• Focus compared with 蓄積
  • 蓄積 emphasizes gathering and storing things such as knowledge or resources; 累積 emphasizes the amount or effect of repeated additions. Some subjects can be described with either word.