What are Greek and Latin roots and why are they so important for 11+ preparation? This is a vocabulary recognition method that may be especially useful in an exam setting. Greek and Latin words form the basis, or root, for many of the words we use in the English language. This is important because it can help us understand the meaning of English words, even when we have never encountered them before. Here are 25 examples from both languages that are in common use today. There are many, many more root words but these can form the beginning of your child’s study of them.