He was a member of the brotherhood.

The brotherhood between them is unbreakable.

My brotherment is very important to me.

My half-brothers are coming over for dinner tonight.

My two brothers-in-law are coming over for dinner tonight.

My big brothers always look out for me.

My cousin brothers are coming to visit me next week.

They have been best friends since childhood and consider themselves blood brothers.

My co-brothers are very supportive.

My little brothers are always causing trouble.