Vocabulary has a fundamental role in the reading process and contributes greatly to a reader’s comprehension. A reader cannot understand a text without knowing what words mean. Children learn meanings of most words indirectly through everyday experiences with oral and written language. Other words are learned through carefully designed instruction. Beginning readers must use the words they hear orally to make sense of the words they see in print. Children who hear more words spoken at home learn more words and enter school with better vocabularies. This larger vocabulary influences a child’s progress in school. Vocabulary refers to the words we must understand to communicate effectively. There are four types of vocabulary: listening, speaking, reading, and writing. A child’s vocabulary upon entering kindergarten is a prime predictor of success or failure in school. The vocabulary gap can be closed by reading aloud with a child.