Bump

Beule

(a swelling on the skin caused by illness or injury)

Bodenwelle

(a protuberance on a level surface)

Bums

(the sound of such a collision)

Delle

(a protuberance on a level surface)

Plumps

(the sound of such a collision)

Schlag

(a light blow or jolting collision)

Stoß

(a light blow or jolting collision)

Unebenheit

(a protuberance on a level surface)

anrempeln

(to knock against with a light blow or collision)

anstoßen

(to knock against with a light blow or collision)