노크, 두드림
to hit something (such as a door) with the knuckles of your hand or with a hard object in order to get attention
충격, 타격
a blow or hit, especially one that causes damage or injury
노크하다, 두드리다
부딪히다, 치다
to hit something or someone, especially by accident
비난하다, 폄하하다
to criticize or disparage something or someone