Ans: Stress is defined as the object’s force, leading to the change in it, while a strain is defined as the change in the shape of an object when stress is used. It is possible to measure stress and have a unit, while a strain is not likely to have no measuring unit. The word stress and strain are derived from the Latin phrase strictures, drawing tight and binding tightly. After studying the differences, it is essential to check out the relation between them. The association between stress and strain is directly proportional to each other up to an elastic limit. As per Hooke’s law, the strain in a solid is proportional to the applied stress, and it should be within the stretchability limit of that solid.