How do workstations and deskstop computers compare?

the basic difference between desktop and workstation is that in desktop ecc ram( error checking and correcting ram) is not present while if i talk about in workstation ecc ram is present there as well as workstations are preferred due to higher applixcation like autocadd application,designing application, mechnical designing purpose and also as well as it is certified by isv( international software vendor). simply i can say that workstation are more powerful than desktop.