- brotherhood - the kinship relation between a male offspring and the siblings
--1 is a kind of kinship, family relationship, relationship
- brotherhood, fraternity, sodality - people engaged in a particular occupation; "the medical fraternity"
--2 is a kind of class, social class, socio-economic class
--2 has members: brother; sodalist- brotherhood - the feeling that men should treat one another like brothers
--3 is a kind of friendliness
- union, labor union, trade union, trades union, brotherhood - an organization of employees formed to bargain with the employer; "you have to join the union in order to get a job"
--4 is a kind of organization, organisation
--4 is a part of labor movement, trade union movement, labor
--4 has particulars:industrial union, vertical union; craft union; company union; Industrial Workers of the World, IWW, I.W.W. - brotherhood, fraternity, sodality - people engaged in a particular occupation; "the medical fraternity"