Throughout mythology there have been multiple creatures called "trolls" from hulking giants the size of city blocks, the ogre-like creatures you describe and then those that actually contain a modicum of intellect: the more alien/hostile counterparts to dwarves similar in stature/preoccupation but more beastly and the money-counting more slight diminutive creatures that slink away under bridges. That just names a few. None has any greater claim to fame than any other. If you don't like it... well, sucks to be you. Point is that you can't definitively call a troll anything.