The document defines and distinguishes between different types of clauses:
- Phrases contain a group of words with a noun and verb but do not express a complete thought.
- Independent clauses can stand alone as a complete sentence. Dependent clauses cannot stand alone as they are incomplete and require an independent clause.
- Dependent clauses are introduced with subordinating conjunctions like "although", "before", and "because" and require an independent clause to complete the sentence.