► 名詞
数 [(1)かず] meaning: number rank: 1
☆ 参加者の数は百人を超えた ⇨ The number of participants exceeded 100
☆ 席の数には限りがあります ⇨ There are a limited number of seats available
数字 [すうじ] meaning: number rank: 1
☆ アラビア数字 ⇨ Arabic numerals
☆ 具体的な数字を挙げてもらえますか ⇨ Can you give me a concrete number?
番号 [(3)ばんごう] meaning: number rank: 1
☆ 製造番号 ⇨ A (serial) production number
☆ 選手は背番号順に並んでいる ⇨ The players are sorted by their jersey numbers
☆ 部屋の番号は何番？ ⇨ What is the room number?
背番号 [(2)せばんごう] meaning: number rank: 4
☆ 背番号五番の選手 ⇨ The player with number five on his jersey (☛ Player number on a jersey. Called 背番号 even when on the front side of the jersey)
定数 [(3)ていすう] meaning: number rank: 4
☆ 参議院の定数は248人だ ⇨ The number of the seats for the upper house is 248
► 接尾辞
数 [(1)すう] meaning: number rank: 1
☆ ウェブサイトの登録者数 ⇨ The number of the registered users of the website
☆ 事故の件数が増えた ⇨ The number of accidents has increased
掛かり [(1)がかり] meaning: number rank: 2
☆ ピアノを五人掛かりで運んだ ⇨ It took five people to carry and move the piano
☆ 三日掛かりの仕事 ⇨ A job that takes three days (to finish)
☆ 警官が三人掛かりで犯人を抑え込んだ ⇨ It took three cops to wrestle down the perpetrator
号 [ごう] meaning: number rank: 2
☆ これは試作車の二号車だ ⇨ This is the prototype car No.2
☆ 彼は第六十号ホームランを打った ⇨ He hit his 60th home run
弾 [(1)だん] [liter] meaning: number rank: 3
☆ 特別報道番組第二弾 ⇨ The second installment of the special report program
☆ 税制改革の第一弾 ⇨ The first installment of the taxation reform
► 接頭辞
第 [(1)だい] meaning: number rank: 2
☆ 彼女は現在世界ランク第一位だ ⇨ She is No.1 in the world ranking right now
☆ 第75回日本選手権 ⇨ The 75th Japanese championship
☆ 第二次世界大戦 ⇨ The second world war