• Basic forms
• 退く — step back; withdraw / base form
• 退きます — steps back; withdraws / masu form
• 退いた — stepped back; withdrew / ta form
• 退いて — stepping back … / te form
• 退かない — do not step back / negative
• 退けば — if (one) steps back / conditional
• Common expressions
• 一歩退く — step back one step
• 前線から退く — withdraw from the front line
• 第一線を退く — retire from the forefront
• More
• 退いている — has withdrawn; is stepping back / state

退く（のく） is a godan intransitive verb. It describes stepping back or withdrawing, both physically and figuratively.

• Basic forms
• 退ける — move aside; repel; remove / base form
• 退けます — moves aside; repels / masu form
• 退けた — moved aside; repelled / ta form
• 退けて — moving aside … / te form
• 退けない — do not move aside / negative
• 退ければ — if (one) moves aside / conditional
• Common expressions
• 障害を退ける — remove an obstacle
• 敵を退ける — repel an enemy
• 反対意見を退ける — dismiss opposition
• More
• 退けたい — want to remove / 〜たい form
• 退けている — has removed; has repelled / state

退ける（のける） is an ichidan transitive verb. It focuses on actively removing or repelling something by intention.