The best replacement for bump is lump.

The best alternatives to bump are rated as following:
★★★★★  lump
★★  knot
★★  speed hump
★★  hump
★  wart
★  airdrop
★  keloid
★  bloat
★  normal map
★  normal mapping
★  s beam
★  android beam
★  bloating
★  concussion
★  stubborn
★  boy bump
  genital wart
  bloated
  blister
  handshake
  hand shake
  risen
  tend skin
  syphilis bump

Your alternative for bump is not listed? Suggest!
Speaking about bump, one probably shouldn't forget about black dot.

Other search terms related to bump and their ratings are:
★★★★★ black dot
★★★ bruise
★★ black dot in center
★ injury
black dot in middle
You have in mind a companion for bump and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of bump in all years. Click on graph for more.
bump
lump
knot