A big difference in ADV LC is the special/physical split; all moves of a given type are either physical or special. For example, Tri Attack is physical because all Normal-type moves are physical. Here is a list of which types are physical and special:

Special: Fire, Water, Electric, Grass, Ice, Psychic, Dragon, Dark.
Physical: Normal, Fighting, Poison, Ground, Flying, Bug, Rock, Ghost, Steel.

A good way to remember this is that there is an Eeveelution for every special type but Dragon.