Agency
Part of speech: noun
Definition: The faculty of acting or of exerting power; the state of being in action; action; instrumentality. The office of an agent, or factor; the relation between a principal and his agent; business of one entrusted with the concerns of another. The place of business of an agent. A bond issued by a US government-backed entity, such as Fannie Mae.
Example sentence: I believe in miracles. At the age of 13, I was on holiday in Moscow with my mother. It was the only trip I took in my whole childhood. We stepped off a metro train and were approached by a talent scout who told me that she wanted to sign me to her modeling agency.
Bureau
Part of speech: noun
Definition: officedesk, usually with a cover and compartments for storing papers etc. located above the level of the writing surface rather than underneathchest of drawers for clothes