occasion    uburyo
En-En dictionary 
urunana (i-)     6  class 6
singular: uru-
plural: in-
  
1. small ornamental axe, 2. bracelet worn on hand for special occasion
karyenda   3  class 3
singular: i-,in-
  
traditional sacred royal drum, hidden in its sanctuary and only brought forth on very rare occasions like the umuganuro festival
uburyo     8  class 8
singular: ubu-
  
(no pl.) right hand or side, opportunity, occasion, manner
ukuryo   9  class 9
singular: uku-
  
right hand or side, opportunity, occasion, manner