τοιχανάγλυφο → relief sculpture
τοιχανάγλυφαIn plastic art, relief sculpture is any work which projects from but which belongs to the wall, or other type of background surface, on which it is carved. Reliefs are traditionally classified according to how high the figures project from the background. Also known as relievo, relief sculpture is a combination of the two-dimensional pictorial arts and the three-dimensional sculptural arts. Thus a relief, like a picture, is dependent on a background surface and its composition must be extended in a plane in order to be visible. Yet at the same time a relief also has a degree of real three-dimensionality, just like a proper sculpture.
http://www.visual-arts-cork.com/sculpture/relief.htm#:~:targetText=Definition%20and%20Meaning,figures%20project%20from%20the%20background.