Boiled egg, a popular breakfast item, can be substituted with words like hard-boiled egg, soft-boiled egg, medium-boiled egg, or simply a boiled egg. These synonyms refer to the varying degrees of cooking time and temperature that each variation of the boiled egg undergoes. A hard-boiled egg has a firm yolk and white, while a soft-boiled egg has a liquid yolk and runny white. A medium-boiled egg is somewhere in between, with a yolk that is still partially liquid. Regardless of the specific variation, a boiled egg is a versatile and filling addition to any meal, whether eaten on its own or added to salads, sandwiches, and other dishes.