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corn 
Native American cereal cultivated for its grains and used for human and animal food; it is also used to produce a sweet syrup and a cooking oil.
corn: cob
kernel
Each of the small dry fruits whose single seed is fused to its casing; a cob of corn holds several hundred kernels.
husk
Cob casing that protects the kernels and keeps them moist.
cob
The cob is composed of a wide main axis with rows of tightly packed kernels; each cob grows in the axil of a leaf along the stem.
silk
Tuft of long filaments emerging from the end of the spike casing; the filaments were once attached to ovaries that have now become kernels.
