Icyuma gikozwe mu cyuma gishyuha ni icyuma gifite isura nziza cyane. Gikenewe cyane kuko gifite ubushobozi bwo kurwanya ingese n'ubundi bwoko butandukanye bwa ingese. Imiterere y'icyuma gishyuha ni uko gifite imiterere isangiwe, bityo icyuma gikozwe mu cyuma gishyuha gifatwa nk'ikintu gikwiranye n'ibibazo by'iki gihe. Kiboneka mu byiciro bitandukanye kandi buri kimwe muri ibi gitandukanijwe n'imiterere yihariye. Chromium iboneka muri SS, niyo mpamvu ari icyuma gishyuha kandi ni nayo mpamvu kirwanya ingese.