What is the difference between yield stress and tensile strength, and how do they relate to each other in the context of material strength?

Yield stress is the point at which a material begins to deform plastically, while tensile strength is the maximum stress a material can withstand before breaking. Yield stress is lower than tensile strength. In the context of material strength, yield stress indicates the point at which permanent deformation occurs, while tensile strength shows the maximum stress a material can handle before failure.