There is no difference between Ghost Steps and Trapeze, Ghost Steps generally refers to Trapeze.
Trailing dance, also known as Melbourne Shuffle, originated in Melbourne, Australia. It belongs to a kind of power dance, is a kind of foot-dragging dance steps, fast and powerful action, music is strong and shocking, dance full of dynamic energy, very scene rendering power.
Trailing dance has a variety of styles, the nature of each style is not the same, the main styles of trailing dance are: hardcore, MAS, AUS, BASS, MARK, free style and so on.
Extended information:
The evolutionary difference in any shuffle's stylistic jumps can be categorized as the difference, in the basic movements, between the height of the leg lifts and the distance of the glide. Those who are proficient in the basics are free to change the Running Man approach and add unique elements and movements to shape their own style.
Imitation is also a good way to learn the characteristics of other people's shuffles, and then change them and add your own characteristics to create a different shuffle.
Baidu Wikipedia-Traveling Dance