The colon (:) is used to introduce a quotation, list items, separate clauses where the second expands on the first, and to separate hours from minutes. The semicolon (;) indicates a pause between two main clauses that is more pronounced than a comma. Examples show using commas between items in a list, semicolons between items in a list where the items have internal commas, and a colon before a list that expands on a preceding clause.