This is the 10144th most frequent Japanese word.
重複
Duplication; repetition.
In this sentence, "重複" refers to the duplication of database records, indicating that the same record appears more than once.
データベースのレコードが重複しているため、エラーが発生しました。
An error occurred due to duplicate records in the database.
In this sentence, "重複" implies the presence of repeated or redundant information within the document.
この文書には重複した情報が含まれていますので、簡潔にする必要があります。
This document includes redundant information, so it needs to be made concise.
Here, "重複" is used to describe an overlap or repetition between his current statement and comments made earlier.