If any form of coercion and prevarication is labeled terrorism we then lack a word to describe the act of plowing through a crowd with a truck or planting a bomb in an everyday place with the intention of instilling terror in the population.

Those acts are different from military occupation or apartheid or genocide. It's not a judgement of value. It's a description of a method.

My point is that the word "terrorism" transcended the description of a technique for reaching certain goals, to a general blanket term used to describe "pure evil" and so people started to use it to describe very bad things even if they are not technically terrorism