1. As a noun referring to a step on a ladder:
* "He climbed the ladder, grabbing each rung carefully."
* "The rungs of the ladder were worn and rusty."
2. As a noun referring to a step in a hierarchy or system:
* "She had finally reached the top rung of the company."
* "He was a low rung worker, with little power or influence."
3. As a verb, meaning to ring a bell:
* "The bells rung out across the town."
* "He rung the doorbell twice."
4. As a past participle of "ring" (used to describe a sound or action):
* "The phone rung repeatedly."
* "The bell rung out at noon."
5. As part of a compound noun, such as "rung-in" (meaning to be secretly and improperly included):
* "He was a rung-in candidate for the position."
* "The judge was convinced that the evidence had been rung-in.
Note: While the word "rung" can be used as a verb, it is less common than its past participle "rung".