Punctuation is the name for marks used for writing text. They are used to separate ideas in sentences. Punctuation makes text easier to read and understand. These are the most common punctuation marks used in English:

1. . is a period or full stop
2. , is a comma
3. ? is a question mark
4. ! is an exclamation mark
5. ' is an apostrophe or single quote mark
6. " is a quotation mark
7. : is a colon
8. ; is a semicolon
9. ... is an ellipsis mark
10. - is a hyphen
11. – is an en dash
12. — is an em dash
13. ( ) are parentheses or curved brackets
14. [ ] are brackets or square brackets.

There are other punctuation marks but used less often. Other languages have other marks, such as French using guillemets, « » as quotation marks.