Used to refer to a subject or topic, often related to discussions or situations that need consideration.

Refers to an object or a general concept, often used when the specific name of the object is not known or relevant.

Refers to a distinct piece or unit within a larger group, often used in lists or inventories.

Used to refer to tasks or responsibilities, especially in a professional or occupational context.

Refers to an event or situation that is often more complex or involves multiple parties, sometimes with personal or political implications.