If you want to create words that pack a punch, the many invaluable thing to keep in mind is that it’s not the words themselves which have impact, but rather the Pictures they conjure up in the reader’s mind. In case you are writing a gruesome horror, then describing each and every detail about a mutilated-zombie-feasting-off-the-flesh-of-the-living is just likely to be boring. Why? Since it leaves absolutely nothing to the reader’s imagination! The best horror is IMPLIED horror. Make your reader aware that the zombie is eating the poor soul. Their own imagination may take it from there, so long as you imply what is happening, rather than explicitly say so. A smart technique, and one which Stephen King often uses, is to give a point-of-view explanation of the horrific scene where in fact the viewer can only visit a small fraction of the event. Once you have what the viewer views, your personal imagination is limitless and it creates an infinite landscape of gruesome possibilities. Far better than being told every single detail of what’s happening! Similarly with sexually explicit material, it is the implication that may conjure more intense imagery in the reader’s mind, as opposed to the outright description, that may never live up to the same expectations: In conclusion, you have to consider, which is more powerful, the printed word or the reader’s mind? And it’s really the latter every time.