This document defines and provides examples of vocabulary words related to walking and movement: - Biped refers to a two-footed creature like humans. - Impediment is something that stands in one's way, either physically or intangibly like a lack of confidence. - A peddler is a door-to-door salesperson trying to sell products on foot. - A pedestrian is a person who walks or travels on foot. - A quadruped is a four-footed animal like rabbits.