Some people may use the terms "bleaching" and "whitening" interchangeably. However, that is not entirely accurate. A product that is bleaching is also whitening, but a whitening product may or may not be a bleaching one. Confused? Let me explain it this way: when the term bleaching is used to describe a product, it means that teeth can can be whitened to a point beyond their natural state. For a product to bleach teeth, it will usually contain hydrogen peroxide.
If a product is labeled as whitening it means it can remove stains to bring your teeth to their natural white color. Hopefully this will clear up any confusion you may have regarding these 2 terms and make you a more informed consumer.