It's a friendly and respectful greeting that can be used in a variety of situations. It's commonly used as a general greeting, but it can also be used to express well-wishes.
Here are some additional points:
* Pronunciation: It is pronounced "kee ora".
* Formal vs. Informal: While it's a common greeting, it's considered more formal than "Kia ora", which is the most common Māori greeting.
* Context: You can use "Ki ora" with a variety of responses like "Ki ora" or "Tena koe" (another common greeting).
Let me know if you have any other questions.