Hero
A hero (masculine) or heroine (feminine) is a person or main character of a literary work who, in the face of danger, combats adversity through feats of ingenuity, bravery or strength, often sacrificing their own personal concerns for a greater good.
The concept of the hero can be found in classical literature. It is the main or revered character in heroic epic poetry celebrated through ancient legends of a people, often striving for military conquest and living by a continually flawed personal honor code. The definition of a hero has changed throughout time. Merriam Webster dictionary defines a hero as “a person who is admired for great or brave acts or fine qualities.” Examples of heroes range from mythological figures, such as Gilgamesh, Achilles and Iphigenia, to historical figures, such as Joan of Arc, modern heroes like Alvin York, Audie Murphy and Chuck Yeager, and fictional superheroes, including Superman and Batman.
Martyr
A martyr (Greek: μάρτυς, mártys, “witness”; stem μάρτυρ-, mártyr-) is someone who suffers persecution and death for advocating, renouncing, refusing to renounce, or refusing to advocate a belief or cause as demanded by an external party. In the martyrdom narrative of the remembering community, this refusal to comply with the presented demands results in the punishment or execution of an actor by an alledged oppressor. Accordingly, the status of the ‘martyr’ can be considered a posthumous title as a reward for those who are considered worthy of the concept of martyrdom by the living, regardless of any attempts by the deceased to control how they will be remembered in advance. Originally applied only to those who suffered for their religious beliefs, the term has come to be used in connection with people killed for a political cause.
Most martyrs are considered holy or are respected by their followers, becoming symbols of exceptional leadership and heroism in the face of difficult circumstances. Martyrs play significant roles in religions. Similarly, martyrs have had notable effects in secular life, including such figures as Socrates, among other political and cultural examples.