시작start; beginning 개시beginning; start; opening 개시일D-day; opening day 시구first pitch of a baseball game 시말서written apology and explanation 시무식meeting to launch the New Year 시발departure 시발점departure point 시점starting point 시조progenitor; root

자동차automobile 자동문automatic door 자동automatic 동력motive power 행동action; movement behavior; deed 동물animal 동물원zoo 운동exercise 운동복sportswear; sweat suit 운동장playground; sports field