"Mortarboard" Natural Recordings by Native Speakers
A mortarboard is a type of academic cap traditionally worn by graduates at their commencement ceremonies. It is typically a square or rectangular-shaped cap with stiff fabric and a flat top, usually adorned with the institution's crest or logo. The mortarboard is often worn with a gown and is a symbol of the graduate's achievement and academic accomplishment.
Mortality refers to the state of being mortal, or having a limited or inevitable lifespan. It is the quality or state of being subject to death, and is often used to describe the inevitability of death and the fragility of human life.