gutēza (-tēje)     v    to help to plant, to throw or cause by means of
improve    (another's work) guhīngūra
(physically or otherwise) kwōroherwa
(to begin to feel better after being ill) gutenzukirwa
(soil) gutabira
(taste of food) kuryosha
(a technique) guteza imbere
(ubuhinga)
En-En dictionary 
improvement    (of soil) ukubungabunga
(isi)
(of environment) uguteza imbere ahantu, ukubungabunga ibidukikije
En-En dictionary