Terrorism: the act of using deadly force against a defenseless population for some sort of ideological, political, or spiritual gain.
Vehicle Ramming: using a vehicle conduct a terrorist attack by using it as a weapon by running people over at random. These usually occur in highly populated pedestrian areas with little to no protection.
Radicalization is the process of taking someone and manipulating them into believing a certain set of ideals that could/can require it become their lives purpose and/or inciting violence on those who don't agree with or submit to the same ideals.
Active shooting: when a person uses a gun to conduct an attack. They can either spontaneously attack or plan their attack ahead of time.
Radicalization: the act of convincing, grooming, and manipulating the minds and bodies of people to conform to a way of life for a purpose or some sort of gain.
Social Media: the online content sharing platform
ISIS: a terrorist organization that has taken the place of Al Qaeda as most powerful terrorist organization.
White Supremacy: believing the white race is superior. Many white supremacists fall into the neo-nazi category.