A pseudobulge is a like a galaxy bulge only flatter, more disk-like. (When discussing both, sometimes an "ordinary" bulge is referred to as a classic bulge.) Pseudobulges tend to have some structure rather than being just being a lump of stars, sometimes showing a spiral like a miniature spiral galaxy. Such a structure may be found within a classic bulge as if the galaxy has both, overlaid. Pseudobulges also tend to show star formation whereas classic bulges are more likely to have little and comprise Population II stars.