Graduate degrees usually come in one of two forms: a master’s degree or a doctoral degree (also known as a PhD). Master’s degrees offer you advanced studies in a given field, so you can indeed become a “master” of the subject. Doctoral degrees, on the other hand, are usually focused on developing new knowledge in a highly specialized way. Some doctoral programs will require a master’s degree to get started, whereas others will accept a bachelor’s degree. There are also combined master’s-PhD programs which can bring together the best of both worlds.