Fellowman is a term used to describe a male individual who possesses a commonality or shared interest with another individual. However, there are many synonyms that can be used interchangeably with fellowman. These synonyms include comrade, partner, peer, associate, colleague, friend, ally, and companion.
A comrade is a person who shares mutual interests and supports another person in a similar organization or profession. Partner tends to describe a person who is working with another person to achieve a common goal. Peer is a person who is of similar social status or age. Associate describes a person who works with another in the same company or industry. Colleague is a person who has similar professional or academic qualifications. Friend is a person with whom one has a close personal relationship. Ally is a person who shares or supports another's opinions or goals. A companion is a person who shares an experience or journey with someone else.