This is the 279th most frequent Persian word.
مرگ
"مرگ" means "death" in English.
Here, 'مرگ' is used to denote the concept or phenomenon of death.
مرگ پایان زندگی نیست.
Death is not the end of life.
In this instance, 'مرگ' is used to refer to death in an abstract, philosophical manner.
از فکر مرگ نترس.
Don’t be afraid of thinking about death.
Here, 'مرگ' is used to denote the specific event of an ancient hero's demise.