No, of course not. Engineers refer to pounds per square inch, like pressure, and this value is given the name normal stress, the pounds per square inch applied to a material. The stress which fails a material, is called the strength. The actual stress. Brittle materials fail with very small displacements.
Strength is the stress that causes failure.
This helps know how safe designs will be. Plastic Materials Let's use our same boards, this time let's use 4 tubes of clay or child's modeling material. Measure the distance from the top board to the bottom this time. Now slowly add weight to the top board and maybe stand on the top board. The clay oozes out between the boards, it flows.