What are some common phrases and expressions in colloquial Bengali?
What common phrases and names will be important for you to know in Bangladesh?
Hello: Salaam (purely for Muslim) or "NawMoShkar" (purely for Hindu)

Goodbye: "aabar dekha hobe" (form of saying goodbye but means we'll meet again)
Please: "doya kore or onugroho"
Thank you: "dhon-no-baad"
Yes: "jee-in Bangladesh" "hañ"(everywhere)
No: (naa)