Farqiga ugu weyn ee u dhexeeya summada tolsan iyo summada daabacan waa saddex qaybood:
Alaabooyin kala duwan; Xarafka sumadda, qaabka muujinta kala duwan. Codsiga tirada dalabka ugu yar.
Wax dhib ah maleh summada tolman ama summada daabacan, waa badeecad kordhinaysa aqoonsiga dharka iyo aqoonsiga summada.Waxaan u baahanahay inaan doorano calaamadda ugu habboon si waafaqsan qaabka dharka, midabka iyo dharka, si loogu daro qiimaha sumadda iyo saamaynta suuqgeyneed ee alaabtayada.