Psidium refers to a genus of tropical plants, commonly known as guavas. There are several synonyms for this term, including Cattley psidium, guabang, arasa, jambroñ, gwayave, and goiabeira, depending on geographic location and language. These synonyms are used interchangeably to refer to different varieties of guava plants, which are known for their fragrant smell and flavorful taste. Guava fruits are a rich source of vitamin C, potassium, and fiber, making them a popular ingredient in various recipes, such as smoothies, jams, and desserts. With many different synonyms, the term psidium has diverse applications and uses in different cultures around the world.