Formal:
* வணக்கம் (Vanakkam): This is the most common and polite greeting. It literally translates to "greetings" or "salutations".
* நமஸ்காரம் (Namaskaram): This is another formal greeting, similar to "Namaste" in Hindi.
Informal:
* சொல்லு (Solle): This is a more casual greeting, similar to "Hey" or "What's up?".
* எப்படி (Eppati): This literally translates to "How are you?", but is often used as a casual greeting.
Other options:
* காலை வணக்கம் (Kaalai Vanakkam): Good morning.
* மாலை வணக்கம் (Maalai Vanakkam): Good evening.
* இரவு வணக்கம் (Iraavu Vanakkam): Good night.
It's important to note that the most appropriate greeting will depend on the situation and your relationship with the person you're speaking to.