An automobile battery has more mass as compared to a king-size pillow.
Mass is defined as the measure of the amount of matter contained in a body. On the other hand, weight is defined as the amount of force particularly gravitational force acting on a body.
Although the weight of the same body can be different for different cases which if were the case we couldn't use weight to tell which body has more mass, but here we are considering the weight is being compared in identical conditions and hence, the body which has more weight has more mass. Which in our case is a car battery.
Learn more about mass here
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