3D in things like
- Metal sculpture, metal casting and welding and jewelry making.
- Wood carving, that can be realistic or abstract stone carving.
- Ceramics- pottery or sculptural forms.
then there are genres, such as classical, neo-classical, surrealism, abstract, realism, modernism, post-modernism, etc.
that is a loaded question(s).i hope this is a help to you.
-DR SALIL PANDE