Umbhobho wensimbi ongenamthungo ugqitywe kuyo yonke intsimbi ejikelezileyo, kwaye akukho mbhobho wentsimbi odityanisiweyo phezu komhlaba.Ngokwendlela yokuvelisa, imibhobho yentsimbi engenamthungo inokwahlulwa ibe yimibhobho yentsimbi engenamthungo eqengqelekayo, imibhobho yentsimbi ebandayo eqengqelekayo, imibhobho yentsimbi engenamthungo etsalwa ngokubanda, imibhobho yentsimbi ekhamayo, kunye nemibhobho ephezulu.
Ngokwemilo yecandelo, iibhubhu zensimbi ezingenamthungo zihlulwe zibe ziindidi ezimbini: ezijikelezileyo kunye nezasemzini.Imibhobho yangaphandle ibandakanya isikwere, i-oval, i-triangular, i-hexagonal, imbewu ye-melon, i-astrology, kunye neetyhubhu zamaphiko.
Ityhubhu yentsimbi engenamthungo yenziwe ngentsimbi engqukuva yonke enemingxuma, umphezulu wombhobho wentsimbi ngaphandle kweweld, obizwa ngokuba ngumbhobho wentsimbi ongenamthungo.Ngokwendlela yokuvelisa, umbhobho wentsimbi ongenamthungo unokwahlulwa ube ngumbhobho wentsimbi eshushu eqengqelekayo, umbhobho wentsimbi ongenamthungo obandayo, umbhobho wentsimbi obandayo otsalwa nzima, umbhobho wentsimbi ongenamthungo, umbhobho wokugqobhoza njalo njalo.