Primary evidence is information that is firsthand or original, and has not been interpreted or modified in any way. For example, a newspaper article about a historical event that was written at the time of the event would be considered primary evidence.
Secondary evidence is information that has been interpreted or modified from a primary source. For example, a history textbook that discusses a historical event based on newspaper articles from the time would be considered secondary evidence.
In some cases, a newspaper article may be both primary and secondary evidence. For example, if a newspaper article includes an eyewitness account of a historical event, it would be considered primary evidence for the event itself, but secondary evidence for any information that the eyewitness provides about the context or significance of the event.
Ultimately, the determination of whether a newspaper article is primary or secondary evidence depends on the specific purpose for which it is being used.