This is a "rectangle is a square but a square is not always a rectangle" situation.
Naturopaths often use homeopathy, but are not generally well trained in homeopathy. Naturopaths also offer lifestyle counselling, herbal therapies, acupunture, TCM, and other types of therapies. If you would like homeopathic treatment from a naturopath, I recommend asking the naturopath if he/she has had any additional training in homeopathy outside of naturopathic school.
Homeopaths generally only use homeopathy. Depending on where you are located, there are different licensing requirements for homeopaths. If you are interested in seeing one, check that they have been trained. In some states/provinces in North America, anyone can call themselves a homeopath, even if they haven't been trained.
The differences between these two types of practitioners gets more complicated by the legal system. In every state and province in North America, there are different laws about what naturopaths and homeopaths can and cannot do. Usually homeopaths are not legally able to diagnose any condition and are not able to perform more than basic physical exams. Naturopaths, however, are generally allowed to diagnose and perform the same physical exams an MD would do. In a few states and provinces, naturopaths can prescribe medications like antibiotics or steroids like cortisol. Therefore, check the laws in your area so you know what kind of appointment you are walking into!
Hope this helps to clarify this situation.