1. Period (.): Used to mark the end of a sentence or an abbreviation.
2. Comma (,): Used to separate items in a list, to separate clauses, and to set off introductory phrases.
3. Question Mark (?): Used at the end of a question.
4. Exclamation Mark (!): Used at the end of a sentence to indicate strong emotion or emphasis.
5. Semicolon (;): Used to separate two independent clauses that are closely related in meaning.
6. Colon (:): Used to introduce a list, a definition, or an explanation.
7. Apostrophe ('): Used to indicate possession or contractions.