To Fall Over
To Fall Down
intransitive verb, godan verb
ころぶ
転がす （ころがす） To Roll Something, To Turn Something Over
転がる （ころがる） To Roll, To Tumble, To Lie Down, To Be Scattered About
転ぶ （ころぶ） To Fall Over, To Fall Down
落ちる （おちる） To Fall Down, To Fall, To Drop, To Fail
降る （ふる） To Fall, To Come Down
If I Fall Down, please call-Rob ころぶ. He's a doctor.