What is the difference between elastic modulus and Young's modulus, and how do they relate to each other in terms of material properties?

Elastic modulus and Young's modulus both measure a material's stiffness, but they are not the same. Young's modulus specifically measures a material's resistance to deformation under tension or compression, while elastic modulus is a more general term that can refer to various types of deformation. In terms of material properties, Young's modulus is a specific type of elastic modulus that is commonly used to characterize a material's stiffness.