A Complete Sentence - A sentence that expresses a complete thought and contains a subject and a predicate.
Run-On Sentence - A sentence that combines two or more independent clauses without proper punctuation or conjunctions.
Comma-Splice - A sentence error that occurs when two independent clauses are joined by a comma without a coordinating conjunction.
Semi-Colon (used correctly) - A punctuation mark used to separate two independent clauses that are closely related.
Fragment - An incomplete sentence that does not express a complete thought and lacks either a subject, a predicate, or both.