It's a very informal and versatile greeting used in most situations, like:
* Greeting someone you know
* Answering the phone
* Starting a conversation
It can also be used as a farewell, similar to "bye" or "goodbye".
It's a very informal and versatile greeting used in most situations, like:
* Greeting someone you know
* Answering the phone
* Starting a conversation
It can also be used as a farewell, similar to "bye" or "goodbye".