Four pairs of words are given here out of which the words in three pairs bear a certain common relationship. Choose the pair in which the words are differently related.

Chaff : Wheat Grift : Pulses Grain : Crop Dregs : Wine

Grain : Crop

The product on LHS is waste part of product of RHS. All three satsify this condition except Grain : Crop. In Grain : Crop, h product on LHS is useful part of product on RHS.