► 名詞二人 [ふたり]
meaning: two rank: 1☆ 二
人部屋 ⇨ A room for two
(☛ Two people)☆
妻と二人で
旅行した ⇨ The two of us, me and my wife, traveled together
(☛ Two people)双子 [ふたご] [coll]
meaning: two rank: 3☆
彼女は双子だ ⇨ She is a twin
双生児 [そうせいじ] [tech]
meaning: two rank: 4☆ 一卵性双生児 ⇨ Single-egged twins. Identical twins