Hello:
* Informal: नमस्ते (namaste) - This is the most common and polite way to say hello. It's used for friends, family, and people you know well.
* Formal: नमस्कार (namaskaar) - This is a more formal greeting, used for people you don't know well or those in positions of authority.
Goodbye:
* Informal: अलविदा (alvida) - This is the most common way to say goodbye.
* Formal: विदाई (vidai) - This is a more formal way to say goodbye.
* Other Options:
* शुभ रात्रि (shubh raatri) - Good night
* कल मिलते हैं (kal milte hain) - See you tomorrow
Tips:
* Pronunciation: Pay attention to the sounds of the vowels and consonants. The "a" in "namaste" is pronounced like the "a" in "father." The "i" in "vidai" is pronounced like the "ee" in "see."
* Gestures: Namaste is often accompanied by a gesture where you press your palms together in front of your chest and bow slightly.
Example:
* Hello (informal): नमस्ते, कैसे हो? (namaste, kaise ho?) - Hello, how are you?
* Goodbye (formal): विदाई, शुभकामनाएँ! (vidai, shubhkamnaye!) - Goodbye, best wishes!