General Happening:
* Kutokea: This is the most general term for "happening" and can be used for both events and actions.
* Kufanyika: Similar to "kutokea," this also means "happening" but can also imply "being done" or "taking place."
Specific Happening:
* Kinachoendelea: This means "what is going on" or "what is happening." It is used to refer to a specific event that is currently happening.
* Kinachofanyika: Similar to "kinachoendelea," this also means "what is happening" but can imply a more active or intentional action.
Examples:
* Kuna kitu kinatokea: Something is happening.
* Sherehe inaendelea: The party is happening.
* Nimeona kinachofanyika: I saw what was happening.
* Kutokea kwa ugonjwa: The occurrence of the disease.
The best choice for "happening" will depend on the specific context and the nuance you want to convey.