advantage    akarusho, ubuhīrwe
En-En dictionary 
akarusho (utu-  7  class 7
singular: aka-,aga-
plural: utu-,udu-
  
advantage
ubuhīrwe (ama-)     8  class 8
singular: ubu-
plural: ama-
  
1. blessing, 2. chance, good fortune, 3. privilege, benefit, advantage, 4. fun