Formal:
* Residence: This is a very common synonym for abode.
* Dwelling: This implies a more permanent structure.
* Domicile: This is a legal term referring to a person's permanent home.
* Habitation: This refers to any place that is lived in.
* Mansion: This suggests a large, impressive house.
Informal:
* Home: This is the most common and informal word for abode.
* Place: This is a general term that can refer to any location.
* House: This is a more specific term for a building that is used as a dwelling.
* Pad: This is a slang term for a home, especially a small one.
* Digs: This is another slang term for a home.
Poetic/Literary:
* Hearth: This refers to the fireplace in a home, and can be used metaphorically to represent the home itself.
* Roof: This refers to the structure that provides shelter.
* Shelter: This implies a place of safety and protection.
* Sanctuary: This implies a place of peace and refuge.
The best word to use will depend on the specific context and the tone you are trying to achieve.