W: (adj) chummy [Related to: chum] ((used colloquially) having the relationship of friends or pals)
W: (adj) chummy [Related to: chum] ((used informally) associated on close terms) "a close friend"; "the bartender was chummy with the regular customers"; "the two were thick as thieves for months"
W: (v) pal [Related to: pal] (become friends; act friendly towards)
S: (n) brother, comrade (used as a term of address for those male persons engaged in the same movement) "Greetings, comrade!"
S: (n) Brother ((Roman Catholic Church) a title given to a monk and used as form of address) "a Benedictine Brother"