I recently started reading the Wheel of Time series- another major 90s fantasy series that I missed out on at the time.
It’s quite good, but there are bestial humanoid hordes called Trollocs.
Honestly, if you want to give them an original name, I’m pretty sure you could think of something better. To me it’s much worse than just calling them ‘trolls’, because it sounds like you made an effort and this is the best you can do.
It doesn’t even make sense from an ‘intellectual property’ point of view: I doubt you can claim ownership of the idea of removing one letter from ‘troll-orc’.
This sort of thing is surprisingly common. D&D has ‘worgs’- giant wolves that are totally not wargs- and World of Warcraft has taurens, bull-headed humanoids that are totally not minotaurs.