Formal:
* নমস্কার (Nomoskar) - This is the most formal greeting and is used in situations where you need to show respect, like meeting someone for the first time or talking to an elder.
Informal:
* নমস্তে (Nomoste) - This is a more casual greeting, but still polite. It's often used with friends and family.
* আসসালামু আলাইকুম (Assalamu alaikum) - This is a common greeting among Muslims. It's considered very respectful and can be used in both formal and informal settings.
* সুপ্রভাত (Suprabhat) - This means "good morning" and is used in the morning.
* শুভ সন্ধ্যা (Shubho sondhya) - This means "good evening" and is used in the evening.
Other:
* হ্যালো (Hello) - This is the English word "hello" and is commonly used in Bangladesh, especially in urban areas.
It's always good to learn the different ways to say hello in Bangla, as it shows respect and appreciation for the culture.