• Basic forms
• 降りる — get off; go down / base form
• 降ります — get off; go down / masu form
• 降りた — got off; went down / ta form
• 降りて — getting off … / te form
• 降りない — do not get off / negative
• 降りれば — if (one) gets off / conditional
• 降りろ・降りよ — get off! / imperative
• Common expressions
• 電車を降りる — get off the train
• 階段を降りる — go down the stairs
• バスを次で降りる — get off the bus at the next stop
• More
• 降りたい — want to get off / 〜たい form
• 降りよう — let’s get off / 〜よう form
• 降りている — is off / has gotten off / state

降りる（おりる） is an ichidan intransitive verb. It commonly means “to get off” (a train, bus, etc.) or “to go down” (stairs, a hill).

• Basic forms
• 降る — fall; come down / base form
• 降ります — falls; comes down / masu form
• 降った — fell; came down / ta form
• 降って — falling … / te form
• 降らない — does not fall / negative
• 降れば — if it falls / conditional
• 降れ — fall! (rare/poetic) / imperative
• Common expressions
• 雨が降る — it rains
• 雪が降る — it snows
• 雨が降っている — it’s raining / progressive
• More
• 降りそう — looks like it will rain/snow / seems
• 降ってきた — it started to rain/snow / came to

降る（ふる） is a godan intransitive verb. It’s used mainly for rain and snow — things that “fall” or “come down” from the sky.