The document defines and compares different types of sentences:
- A sentence is a set of words that is complete in itself and typically contains a subject and predicate.
- Phrases are groups of words that do not express a complete thought.
- Clauses contain a subject and verb and can be independent or dependent.
- Simple sentences contain one independent clause. Compound sentences contain two or more independent clauses joined by coordinating conjunctions. Complex sentences contain one independent clause and at least one dependent clause. Complex-compound sentences contain at least two independent clauses and one or more dependent clauses.