Combination is a catch-all term involving multibarrel guns utilizing different calibers/bores.
I believe Cape Gun can be used to describe both the guns you identify.
Other names:
1} Büchsflinte; sxs or o/u, rifle/shotgun, AKA "Cape Gun" 2} Drilling; 3 barrels, two shotgun, one rifle 3} Bockdrilling; o/u 3 barrels, 2 rifle {sometimes different calibers, e.g. 8x57J/.22 LR or .22 Hornet}, one shotgun 4} Vierling; 4 barrels, 2 shotgun, 2 rifle, rifle barrels different calibers {as in an 8x57J and a .22}
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