When it comes to balcony boxes, there are a variety of terms that can be used to describe this type of planter. Some common synonyms for balcony box include flowerbox, window box, railing planter, and deck planter. These terms are all used to describe a rectangular container that is designed to hang or attach to the railing of a balcony or the window of a building. Balcony boxes are typically used to grow flowering plants, herbs, or decorative foliage, and can add a splash of color to any outdoor space. Regardless of the term used, balcony boxes are a popular way to bring a touch of nature to urban environments.