When you have a word (or two) as your logo, that is called a logotype. Commonly used in commerce, logotypes are the easiest symbols to trademark since the added text can further distinguish your design from others, even if you have similar color schemes or included symbols. Logotypes also allow unfamiliar audiences to 'say' your organization's name – imagine how people, unfamiliar with Apple or Nike, would react if they're just shown the Apple apple and Nike's swoosh ...