1.  sorb apple(n = noun.plant) service tree, sorb apple tree, sorbus domestica - medium-sized European tree resembling the rowan but bearing edible fruit;
is a kind of mountain ash
has parts: sorb, sorb apple
has particulars: sorbus torminalis, wild service tree

2.  sorb apple(n = noun.food) sorb - acid gritty-textured fruit;
is a kind of edible fruit
is a part of service tree, sorb apple, sorb apple tree, sorbus domestica

adam's apple, american crab apple, apple, apple aphid, apple blight, apple butter, apple canker, apple dumpling, apple fritter, apple geranium, apple jelly, apple juice, apple maggot, apple mint, apple nut, apple of discord, apple of peru, apple orchard, apple pie, apple polisher, apple polishing, apple rust, apple sauce, apple tart, apple tree, apple turnover, balsam apple, bell apple, big apple, blade apple, candied apple, candy apple, caramel apple, cherry apple, common thorn apple, cooking apple, crab apple, cultivated crab apple, custard apple, custard apple tree, dessert apple, eating apple, green apple aphid, iowa crab apple, jamaica apple, kai apple, kangaroo apple, kei apple, kei apple bush, love apple, mad apple, mammee apple, may apple, oak apple, orchard apple tree, oregon crab apple, otaheite apple, pitch apple, pond apple, prickly custard apple, rose apple, sea apple, siberian crab apple, sorb, sorb apple tree, southern crab apple, star apple, sugar apple, taffy apple, thorn apple, toffee apple, western crab apple, wild apple, woolly apple aphid