► 名詞
兄 [(1)あに] meaning: brother rank: 1
☆ うちの兄 ⇨ My older brother (☛ An older brother)
弟 [おとうと] meaning: brother rank: 1
☆ うちの弟 ⇨ My younger brother (☛ A younger brother)
兄弟 [(1)きょうだい] meaning: brother rank: 1
☆ あの二人は兄弟だ ⇨ Those two are brothers (☛ Biological brothers)
弟さん [おとうとさん] [coll] [respect] meaning: brother rank: 2
☆ あなたの弟さんは何をされているんですか？ ⇨ What does your little brother do for living? (☛ A younger brother)
お兄さん [(2)おにいさん] meaning: brother rank: 2
☆ 彼のお兄さんは有名な野球選手だ ⇨ His brother is a famous baseball player (☛ An older brother)
お兄ちゃん [(2)おにいちゃん] [coll] [family] meaning: brother rank: 2
☆ お兄ちゃん、これ開けて ⇨ Big brother, can you open this for me? (☛ Used by younger siblings to address an older brother)
兄ちゃん [(1)にいちゃん] [coll] [family] meaning: brother rank: 2
☆ 兄ちゃん、どうしたの？ ⇨ Big brother, what happened? (☛ Used by younger siblings to address an older brother)
兄貴 [(1)あにき] [coll] [casual] [男] meaning: brother rank: 3
☆ 兄貴、親父が探してたよ ⇨ Big brother, dad was looking for you (☛ Used by a young or adult man to address his older brother)
☆ (☛ Used by a young or adult man to address his older gang member)
兄さん [(1)にいさん] [coll] [男] meaning: brother rank: 3
☆ 兄さん！ ⇨ Big brother! (☛ Often used to address a man senior to you in family (or a family-like group), regardless of blood relations)
兄貴分 [あにきぶん] meaning: brother rank: 4
☆ (☛ Not a biological brother. Often a gang term)
舎弟 [しゃてい] meaning: brother rank: 4
☆ (☛ A younger brother. Usually a gang terminology)