拐弯 (guǎi wān) = to turn a corner. For giving directions: 左拐 (turn left), 右拐 (turn right). In the kidnapping sense, 拐卖 (guǎi mài) = to kidnap and sell (trafficking).
memory
Think of the word 拐杖 (guǎi zhàng, walking stick/cane) — a stick that helps you turn and hobble along.