Brother
Part of speech: noun
Definition: Son of the same parents as another person. A male child descended from the same parents. A male having at least one parent in common with another (see half-brother, stepbrother). A male fellow member of a religious community or church. Someone who is a peer, whether male or female. A black male.
Part of speech: verb
Definition: To treat as a brother.
Example sentence: I have a wonderful shelter, which is my family. I have a wonderful relationship with my brother and sister; this makes me feel that I know always where I belong.
Comrade
Part of speech: noun
Definition: A mate, companion, or associate.A companion in battle, fellow soldier.A fellow socialist or Communist.(As a title replacing "Mr", "Mrs", "Miss", "Ms" etc in leftwing circles) Comrade Lenin