Urwuri
Urwuri cyangwa igikuyu cyangwa igisambu ni umurima munini cyangwa mutoya uzitiye cyangwa utazitiye ariko  wagenewe kuragirwamo n'amatungo buruyro bwose, harimo ibyatsi cyangwa ibiti birirwa n'amatungo nka sitariya, urubingo , urwiri, kimari terebusakumu.

Ibiranga urwuri 

 Kuba harimo amazi
 Kuba hari igihande gihinze nka  30% byarwo
 Kuba hari Ibyatsi bihunitse bikoreshwa mugihe cy'impeshyi
 ibiraro by'ubakiye .

Amashakiro 
Ibidukikije
Ibiti
Ibimera