Bas-reliefs, also known as low reliefs, are sculptures that are carved into a flat surface with a shallow depth. Synonyms for bas-reliefs include: 1. Low-reliefs 2. Flat reliefs 3. Shallow reliefs 4. Half reliefs 5. Plate reliefs 6. Plane reliefs 7. Cut reliefs 8. Recessed reliefs 9. Surface reliefs 10. Intaglio reliefs All of these terms can be used interchangeably to describe the same type of artistic technique, where an image is carved or molded to stand out from a flat surface, providing a unique and captivating visual experience.