kuvūnguka (-vūngutse)   v    1. to crush, 2. to crumb easily, to crumble
 kuvunguka : possible conjugation of:
kwūnguka (-ūngutse)   v    1. to gain, to earn, 2. make profit, 3. to increase (vi)
crumbs    udukorokera, ubuvunguka, utuvunguka
(to become ~) kuvūngagurika
(to ~ easily) kuvūnguka
En-En dictionary 
crush    gufyonyora, gufyonyoka, kuvūngura
(easily) kuvūnguka
(grain, before grinding) kuvūngagura, kuvūngurīsha
(with hands) kuvūnga
(down) gutsindagira
En-En dictionary 
crumble    (to) kuvūnguka
En-En dictionary