The one that fights and runs away may live to fight another day; fleeing is winning

(poetic) your age/era/generation / (poetic) the era of a nobleman or ruler / (poetic) the emperor's reign / boiled eggs mixed with white bean jam and red bean paste

(physics) conduction band; a range of electron energies in an insulator or semiconductor in which electrons can move freely and transport charge.

mythical creature that brings harm upon those who it passes / assailant who attacks random people on the street