* Noun: When it refers to the course or path something is moving in.
* Adjective: When it describes something related to or indicating direction.
* Verb: When it means to guide or point someone or something in a particular direction.
Here are some examples:
Noun: "The hikers were unsure of their direction."
Adjective: "They followed the direction of the arrow."
Verb: "The teacher directed the students to their seats."