brethren

adjective1

1. •
   Of or akin to; related; like

   • The principle still sounds good, but our astronomical knowledge is limited, and we haven't yet discovered any such brethren solar systems. — 2009

noun2

1. •
   (literary) kinsmen
2. •
   [plural only] (figurative) The body of members, especially of a fraternal, religious or military order.

noun[plural only]2

1. •
   Members of any congregation in the Anabaptist tradition of the Schwarzenau Brethren, practicing credobaptism and committed to nonresistance and nonviolence, some of whom may wear plain dress and shun modern technology.
2. •
   Members of the Church of the Brethren.