1. Adjective: This is the most common usage. It describes something that is easy to see, understand, or hear.
* Example: "The instructions were clear."
2. Verb: It can mean to make something easier to see or understand.
* Example: "She cleared her throat before speaking."
3. Noun: It can refer to a space that is free of obstacles.
* Example: "The ship sailed through the clear."
4. Interjection: It can be used to express agreement or understanding.
* Example: "Clear!"
So, "clear" is a versatile word with multiple parts of speech. To know which one is being used, you have to look at its context in the sentence.