The flight was overbooked, and I was the first to 'be bumped'. [=my seat on the flight was the first seat to be given to someone else]
His career hit a 'bump' in the road. = His career hit a road 'bump'. [=something happened that slowed the progress of his career]
The airplane landed 'with a bump'. [=the airplane went up again and then down when it hit the ground]
(..) What're you doing? I want to see how you are. How is she? I was worried about you. - Look at this. - It's nothing. He says I have a bump on the head and maybe a broken wrist. Let me see that. There's nothing to see. It doesn't hurt. I'm sorry I wasn't there. (..)1996 Twister