When you're thinking of lyrics to a song you probably have tons of imagery and emotions floating through your head, and so many words to describe the images and feelings. Unfortunately, if you use every word that pops into your heard, or describe every image or feeling, it because anticlimactic. If you use to many large words, or any word too much, they begin to lose their meaning. That's why I always say re-write your songs. Think of the first song as a rough draft, read it over and tweak. If you repeat a word too much, find a way to reword the line. There or other word problems besides, big words and repeating words.
