Formal:
* அலுவலகம் (Aluvalakam): This is the most common and formal term for "office."
* அலுவலகம் (Aluvalakkam): This is another formal term, often used in official documents.
Informal:
* அலுவலகம் (Aluvalakam): This can be used informally as well.
* காரியாலயம் (Kariyalayam): This is a slightly more informal term.
Other terms:
* பணியகம் (Panayakam): This literally means "workplace" and can also be used for "office."
* வேலை இடம் (Velai Idam): This means "work place" and is less formal than "office."
The best way to choose the right term depends on the context of your conversation.