Formal:
* فرشته (fereshteh) - This is the most common and general word for "angel." It is used in both religious and non-religious contexts.
Informal:
* فرشته (fereshteh) - This is also used informally, but it is often shortened to فرشت (fereshte).
Other related words:
* ملائکه (mala'ikeh) - This is the plural of "angel" and is used in religious contexts.
* فرشته ی نگهبان (fereshteye negahban) - This means "guardian angel."
Note: The pronunciation of these words can vary slightly depending on the speaker's regional accent.