Formal:
* Furnishings: This is a broad term that encompasses all items used to furnish a space.
* Household goods: This term includes furniture but also other items like appliances, linens, and décor.
* Domestic articles: This is a more formal and antiquated term for household objects.
Informal:
* Stuff: This is a casual and informal term that can be used to refer to furniture and other household items.
* Things: Similar to "stuff," but slightly more formal.
* Pieces: This is a good option when referring to individual furniture items.
Specific:
* Seating: If you're only talking about chairs, sofas, etc.
* Sleeping: If you're focusing on beds, mattresses, etc.
The best word to use depends on the specific situation and your intended meaning.