I have been thinking about the terms "archiving" and "backup" for a while now. At times I seem to use them interchangeably. The more I thought about it, the more I realized that they are similar but not the same.
With both archiving and backup you should follow the same principles. This means that you should chose good quality media, make several copies of the same data, and store the data offsite and in a cool, dry place. If all these principles are the same, are the terms the same? Not quite.