Bula is a common greeting in Fiji, and is used to say hello, goodbye, or simply as a way to acknowledge someone. It is pronounced "boo-lah" and is typically accompanied by a handshake or hug. Bula can also be used to express gratitude or to wish someone well.
Ni
The prefix "ni" is used to make a word more polite or formal, and is often added to the beginning of greetings or other phrases. In this case, "ni" is added to "bula" to create the phrase "ni sa bula", which is a more respectful or formal way to say hello or goodbye.
Sa
The word "sa" is a verb meaning "to be" or "to exist", and is used in many different Fijian phrases and greetings. In this case, "sa" is used to create the phrase "ni sa bula", which can be translated as "hello" or "good day".
Overall, the phrase "Ni sa Bula" is a friendly and respectful way to greet someone in Fiji, and is used both formally and informally. It is a versatile greeting that can be used in a variety of situations, and is sure to be appreciated by the person you are greeting.