Hi, I've been writing a fantasy book for several years with a fantasy name I made up for it. But over the course of the years, before I managed to finish it, a company emerged with that name. Does that mean I can't use the word for my book's name anymore? If not, may I still use it in a composite name like 'The world of ...."? This has been bugging me for a long time now and I'd like to have a definite answer.