You're going to have to come up with an incredibly convoluted definition of terrorism in order to have it include only people, groups or countries you dislike, but not include people, groups and countries that you do like. And if you do that, then it goes back to the comment by the person you replied to that said that "terrorist" is a subjective term. If you apply consistent rules and definitions, then most governments in the world will be found to be conducting terrorist activities, and mutual accusations of it lose any meaning.