indefinite quantity vs addition

Other hyponyms of indefinite quantity include gain, increase, bag, breakage, capacity, catch, haul, correction, fudge factor, containerful, footstep, pace, step, stride, headspace, large indefinite amount, large indefinite quantity, limit, limitation, limit, limit point, point of accumulation, output, production, yield, neighborhood, region, outage, reserve, run, small indefinite amount, small indefinite quantity, spillage, spoilage, tankage, ullage, top-up, worth, skinful, dosage, dose, load, load, loading, precipitation, supply, kilometrage, lift capacity, ton capacity.