We present the homogeneous abundance analysis for a combined sample of 185 giants in the bulge globular cluster (GC) NGC 6388. Our results are used to describe the multiple stellar populations, and differences or analogies with bulge field stars. Proton-capture elements indicate that a single class of first generation polluters is sufficient to reproduce both the extreme and intermediate parts of the anti-correlations among light elements O, Na, Mg, and Al, at odds with our previous results, based on a much smaller sample. The abundance pattern of other species closely tracks the trends observed in bulge field stars. The neutron-capture elements are generally uniform ([Zr/Fe] is an exception). We do not find enhancement in n-capture elements for stars whose photometric properties would classify NGC 6388 as a type II GC. Together with the homogeneity in [Fe/H], this indicates we need to understand better the criteria to separate classes of GCs, coupling photometry and spectroscopy. We present abundances of O, Na, Mg, Al, Si, Ca, Ti, Sc, V, Cr, Mn, Fe, Co, Ni, Zn, Y, Zr, Ba, La, Ce, Nd, and Eu from UVES spectra. For 12 species we also obtain abundances in a large number of giants (up to 150) from GIRAFFE spectra.