Honestly I do not know about the Tabbi system of disease treatment. As far as homeopathy is concerned it is based on the principle of like treats like. In this system the diseases are treated by minute doses of natural substances that in larger amounts would produce the symptoms of disease.
Ayurvedic system is traditional Hindu system of disease treatment which is based on idea of balance in body systems and uses diet, herbal treatment and yogic breathing.
Yes religious aspects should be involved in ethnobotany for the conservation of plant species
Unani-tibbi denotes Arabic or Islamic medicine, also known as prophetic medicine. It traditionally makes use of a variety of techniques including diet, herbal treatments, manipulative therapies, and surgery. Unani-tibbi is a complete system, encompassing all aspects and all fields of medical care, from nutrition and hygiene to psychiatric treatment