革

カク

かわ

革, 廿, 十, 口

革

leather, become serious, skin, hide, pelt

改革(かいかく): reform; reformation; innovation
革命(かくめい): (1) revolution (2) 58th year of the sexagenary cycle (in onmyou-dou)
革新(かくしん): reform; innovation
革(かわ): leather
変革(へんかく): (1) change; reform; revolution; upheaval (2) Reformation
つり革(つりかわ): strap (to hang onto)