Asked by ketagajjar | 6th Sep, 2009, 01:29: PM
Gum is any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying.
Tannin is any of various complex phenolic substances of plant origin; used in tanning and in medicine. It is found in grape skins, seeds and stalks.
Answered by | 9th Sep, 2009, 02:30: PM
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