There are several synonyms for the term "wax plant," which generally refers to a flowering plant with glossy, waxy leaves and fragrant flowers. Some of the common synonyms include hoya, porcelain flower, and wax vine. The hoya plant, also known as the Hindu rope plant, is a popular variety of wax plant that is often grown as a houseplant. The porcelain flower is another type of wax plant with delicate white or pink petals. And finally, the wax vine is a climbing plant that produces fragrant white or yellow flowers and is commonly used for decorative purposes. Regardless of the specific synonym used, all of these plants share a unique beauty and are prized by gardeners and plant enthusiasts alike.