Formal:
* Hana Kula: This literally means "school work," and is a common way to refer to homework in a formal setting.
Informal:
* Hana Home: This means "work at home" and is a more informal way to refer to homework.
* Hana'ōlelo: This translates to "language work" and might be used for language-specific homework.
You can also use a phrase like "Hana i ka home" which means "work at home".
It's important to note that the choice of word will depend on the context and the audience. If you are unsure, it's always best to ask a native speaker for clarification.