1. Period (.) - Used at the end of a declarative sentence, after abbreviations, and in some other cases.
2. Comma (,) - Used to separate items in a list, clauses in a sentence, and to set off introductory phrases.
3. Question Mark (?) - Used at the end of an interrogative sentence (a question).
4. Exclamation Mark (!) - Used at the end of an exclamatory sentence (expressing strong emotion).
5. Semicolon (;) - Used to separate independent clauses that are closely related in meaning.
6. Colon (:) - Used to introduce a list, a quotation, or an explanation.
7. Apostrophe (') - Used to indicate possession, contractions, and some plural forms.