Anti- Weapons with [ANTI-KEYWORD X+] in their profile are known as Anti weapons. Each time an attack is made with such a weapon against a target with the keyword after the word ‘Anti-’, an unmodified Wound roll of ‘x+’ scores a Critical Wound.
Assault Weapons with [ASSAULT] in their profile are known as Assault weapons. If a unit that Advanced this turn contains any models equipped with Assault weapons, it is still eligible to shoot in this turn’s Shooting phase. When such a unit is selected to shoot, you can only resolve attacks using Assault weapons its models are equipped with.