Edge Anti-Aliasing:
Elimination of the 'jagged edge' effect which may appear on the sides of objects. Is usually a software-driven technique.

Environment mapping:
Reflections from the environment are mapped onto an object, allowing 3D scenes to be rendered even more realistically.

Environmental Bump Mapping (EBM):
Bump mapping technique which blends three textures in order to produce ultra-realistic relief and lighting effects.

Engine:
A collection of software routines that perform a specific task.