Informal:
* "Aapni kemon acho?" (আপনি কেমন আছো?) - This is a very common way to greet someone informally. It literally translates to "How are you?". It's used for friends, family, and people you know well.
* "Kemon acho?" (কেমন আছো?) - A slightly shorter version of the above, also informal.
* "Hallo" (হ্যালো) - This is a very casual greeting, similar to "hello" in English.
Formal:
* "Apni kemon ache?" (আপনি কেমন আছেন?) - This is a polite and formal way to greet someone. You'd use this for someone you don't know well, an elder, or someone in a position of authority.
* "Shubho shomoy" (শুভ সময়) - This literally means "good time" and is a very polite and formal greeting.
* "Nomoshkar" (নমস্কার) - This is the most formal greeting in Bengali, similar to "namaste" in Hindi. It's used in very formal settings or when addressing someone you deeply respect.
Important Note:
* Formal greetings are important in Bengali culture. It's best to use a formal greeting unless you're sure it's appropriate to be informal.
* Using the proper pronoun is key. In Bengali, you need to choose the right pronoun to address someone based on their age and social status. "Apni" is the polite and formal pronoun, while "tui" or "tumi" are informal.
I hope this helps!