All life forms has been classified into a major wide group called DOMAIN. Bacteria is one of the set of organisms classified in this domain. Bacteria are single-celled organisms composed of different species represented by different genera. Two of those genera is the basis of this question; Staphylococcus and Spirochaeta.
Staphylococcus is one of the genera of bacteria. It consists of species that are gram-positive and spherical in shape (coccal) while Spirochaeta is a bacterial genus that consists of species that are gram-negative, motile and spiral or coiled shaped.