Compound Sentence: A compound sentence consists of two or more independent clauses joined by coordinating conjunctions (such as "and," "but," or "or"). It allows for the combination of related ideas into one sentence.
Complex Sentence: A complex sentence contains an independent clause and at least one dependent clause. The dependent clause cannot stand alone as a complete thought.
Compound-Complex Sentence: A compound-complex sentence combines elements of both compound and complex sentences. It includes two or more independent clauses and at least one dependent clause.