Meaning: The robot is moving around on its own and making sounds that can be easily heard.
Choice of Words: The sentence describes a robot that is both walking and talking in a loud manner. The word "robot" is a noun that refers to a machine that can be programmed to carry out a complex series of actions automatically. The words "walks" and "talks" are verbs that describe the robot's actions, and the word "loudly" is an adverb that describes the volume of the robot's speech.