Formal:
* عروسی (aroosī): This is the most common and formal word for "wedding."
* ازدواج (ezdevāj): This word means "marriage" and is often used in formal contexts.
Informal:
* عروسی (aroosī): This is also used informally, but it's important to note that it is sometimes understood as a more formal term, particularly in older generations.
Other terms:
* حفل ازدواج (hafl-e ezdevāj): This means "wedding ceremony" and is often used in official contexts.
* جشن ازدواج (jeshn-e ezdevāj): This means "wedding celebration" and is more common in informal contexts.
The best way to choose the right word is to consider the context and the level of formality.