Power shovel:
Power shovels are chain crawler excavators. Not only its equipped with a powerful engine, but it also has enhanced arm which enables it to perform cut, fill and loading soil efficiently and due to its bigger bucket, it can carry even much more soil. One of the differences compared to crawler excavator, is position of bucket which is faced backwards.
Bucket shovels are in fact loaders with outer design, and therefore concerning engine’s high power and also enhanced arm and bucket, it could be used for hard ground surfaces.