Duplicate content in content writing refers to blocks of text that appear in more than one place on the internet, either within the same website or across different websites. This can cause issues for search engines when deciding which version to index and rank.
Synonyms: repeated content, copied content, redundant content, content duplication

Duplicate content matters because search engines like Google aim to provide unique and valuable information to users. When multiple pages have the same content, it can confuse search engines, potentially lowering the ranking of all pages involved.
Search engines may struggle to decide which version of the content to show in search results. This can lead to lower visibility, reduced traffic, and a negative impact on your website's SEO performance.