soul    roho, ubugīngo
En-En dictionary 
soul mate,  friend    umugēnzi
(close ~) umukūnzi
(intimate ~, the one you share your last hidden food with) somambike
(most intimate ~, ”you die - I die”) pfampfe
(to visit a ~) kubūngirana
En-En dictionary 
roho   3  class 3
singular: i-,in-
plural: i-,in-
  
1. spirit, 2. soul (from Sw. roho)
ubugīngo     8  class 8
singular: ubu-
  
(no pl.) 1. life, 2. soul