  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, which is at odds with our previous results based on a much smaller sample.
The abundance pattern of other species in NGC 6388 closely tracks the trends
observed in bulge field stars. In particular, the alpha-elements, including Si,
rule out an accreted origin for NGC 6388, confirming our previous results based
on iron-peak elements, chemo-dynamical analysis, and the age-metallicity
relation. The neutron-capture elements are generally uniform, although the
[Zr/Fe] ratio shows an intrinsic scatter, correlated to Na and Al abundances.
Instead, we do not find enhancement in neutron-capture elements for stars whose
photometric properties would classify NGC 6388 as a type II GC. Together with
the homogeneity in [Fe/H] we found in a previous paper, this indicates we need
to better understand the criteria to separate classes of GCs, coupling
photometry, and spectroscopy. These results are based on abundances of 22
species (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 sampling proton-, alpha-, neutron-capture
elements, and Fe-peak elements. For 12 species, we also obtain abundances in a
large number of giants (up to 150) from GIRAFFE spectra.
