This document discusses vocabulary building and vocabulary types. It defines vocabulary as the glue that holds stories, ideas, and content together for comprehension. It describes the four main types of vocabulary: reading vocabulary includes all words one can recognize when reading; listening vocabulary includes words one can recognize when listening; writing vocabulary includes all words one can employ in writing; and speaking vocabulary includes all words one can use in speech. The document also provides tips for teaching vocabulary, such as teaching it both explicitly and incidentally, using repetition, learning from context, and ensuring active engagement. It emphasizes that vocabulary learning is important for learning a foreign language.