Alto rilievo and Rilievo

Alto rilievo noun - A sculptural relief in which forms extend out from the background to at least half their depth.

Rilievo and alto rilievo are semantically related. In some cases you can use "Rilievo" instead a noun phrase "Alto rilievo".

Rilievo noun - Sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background.

Alto rilievo and rilievo are semantically related. Sometimes you can replace phrase "Alto rilievo" with "Rilievo", this terms are similar.