What term refers to information that is similar or identical?

The term that refers to information that is similar or identical is 'duplicate.' This word specifically denotes something that is an exact copy or counterpart of something else. In the context of data and information, a duplicate indicates that the content or data points are not just similar, but are actual replications of each other, maintaining every detail intact.

The focus is on the exactness of the information, where duplicates can often lead to issues such as redundancy in databases or confusion in data management. Recognizing duplicates is important in various fields, such as data analysis and information technology, to ensure accuracy and efficiency in processing information.