"Ruta" is a botanical name for the herb commonly known as Rue. In a medical context, it may refer to the dried leaves of this plant (Ruta graveolens), which have been used in traditional medicine for various purposes such as treating anxiety, menstrual cramps, and skin conditions. However, it's important to note that the use of Ruta in modern medicine is not well-studied, and its effectiveness for these uses is not established. Additionally, Ruta can have toxic effects and should be used with caution under the guidance of a healthcare professional.

Homeopathy is a complementary and alternative medicine (CAM) system, developed in the late 18th century by Samuel Hahnemann, based on the principle of "like cures like." This concept suggests that a substance that causes symptoms in a healthy person can be used in very dilute quantities to treat similar symptoms in illness. The dilutions are so extreme that no molecules of the original substance remain, leading to significant controversy and skepticism over any potential therapeutic effect. Homeopathic remedies are typically made from plants, minerals, or animals, and are often highly individualized for each patient based on their specific symptoms, mental and emotional state, and overall constitution. Despite its widespread use, homeopathy lacks robust scientific evidence supporting its efficacy beyond placebo effects, and it is not considered a mainstream medical practice in most countries.

Pharmacognosy is the study of the physical, chemical, biochemical and biological properties of drugs or potential drugs derived from natural sources. It involves the examination, isolation, identification, and analysis of the active and non-active components of medicinal plants and other natural materials. The field also encompasses the investigation of the traditional uses, pharmacology, toxicology, and standardization of these naturally occurring drug preparations. Pharmacognosy is a branch of pharmaceutical sciences that contributes to the development of new drugs and natural health products.

I apologize for any confusion, but "Rosales" is not a medical term. It is a botanical term used in the classification of plants. Rosales is an order of flowering plants that includes roses, as well as many other plants such as apples, cherries, almonds, and strawberries. The plants in this group are characterized by having flowers with multiple stamens and styles. I hope this clarifies any confusion. If you have any medical terms you would like defined, please let me know!