Clerk (noun)

1. An administrative official in charge of record-keeping, correspondence, and other office work.
2. A person who works in a shop or store.
3. An assistant in a court of law.

Origin:

Middle english: from old northern french clerc, from latin clericus, from greek klerikos, originally denoting a member of a clergy, later an official or secretary.

Examples:

1. She works as a clerk in the town hall.
2. The clerk was in charge of maintaining the records of the town.
3. The clerk helped the customer find the items she was looking for in the store.
4. The clerk recorded the proceedings of the court.
5. The clerk acted as the assistant to the judge in the court.