Word

双方向

そうほうこう
two-way; bidirectional; interactive
Word

双生児

そうせいじ
twins
Word

双六

双陸、雙六
すごろく、すぐろく
sugoroku; traditional Japanese board game played with dice
Word

一双

いっそう
pair (esp. of folding screens)
Word

双頭

そうとう
double-headed
Word

双璧

双壁
そうへき
matchless things; matchless people; pair of bright jewels
Word

草紙

草子、双紙、冊子
そうし
written work (esp. a bound text, as opposed to a scroll); a text written entirely in kana; graphic novel (esp. one created between the 12th and 19th centuries); notebook (for practicing kana, drawing pictures, etc.); rough draft
Word

双眼

そうがん
both eyes; binocular
Word

双眼鏡

そうがんきょう
binoculars; field glasses
Word

双曲線

そうきょくせん
hyperbolic curve; hyperbola