Buya

-buya
return, come back, go back
return from

or, return to, as in
buyelekhaya
to return home

with root word, -ya, to go

Wabuya e-London engasakwazi ukukhuluma isiZulu.
He returned from London no longer knowing how to speak Zulu.

a related noun
imbuya, izimbuya
amaranth, a highly nutritious wild edible green/spinach
I wonder if it is called that, for the reliable way it returns each spring?

Here is a find, on youtube  Nathi's song Buyelekhaya with lyrics and translations!

The phrase 'Buyelekhaya' also has a deeper meaning and resonance of
returning to one's roots
it is the ceremony when a thwasa who has completed their training
returns home, to strongly connect with, honour and celebrate their ancestors
and establish their own healing practice

vocabulary from isizulu.net
example from the isiZulu Oxford Living Dictionary