adjective
Definition: Expected or scheduled to happen or arrive at a certain time; also refers to something that is appropriate or deserved.
Example: The train is due to arrive at 3 PM.
adverb
Definition: In a straight line or direction; exactly or directly.
Example: The treasure is buried due north of the old oak tree.
noun
Definition: A payment or obligation that someone is required to give or pay, often related to membership or something that is owed to someone.
Example: He paid his dues to remain a member of the club.