Here is an infallible test to decide terrorism in any case where large numbers of people (Humans – genus homo) are destroyed:
If the humans are destroyed by missile strikes, smart bombs, or any automatic machinery, it is the people killed who are the terrorists, and those operating the machinery are innocent victims. This is especially true if the killing machinery is entirely human-free, such as robot drones firing hell fire missiles.
If the humans are destroyed, on the other hand, by other humans, who may also destroy themselves in the process as in the case of suicide bombers, then it is the humans destroyed who are the innocent victims, and those doing the destroying who are the terrorists.
Cousin strands of genus homo, such as apes, gorillas, chimpanzees, and orangutans (orang hutan = “people of the trees”) need not be considered because although they have the necessary two legs, two arms, and head configuration, none have any known experience of manufacturing explosives.