The best replacement for bowel is colon.

The best alternatives to bowel are rated as following:
★★★★★  colon
★★★  intestine
★★★  bowels
★★  bowl
★  large bowel
★  inflammatory bowel
★  small intestines
★  diverticulitis
★  celiac
★  small intestine
★  large bowel obstruction
  ovarian cancer
  spastic colon
  colitis
  necrotic bowel
  large bowel diarrhea
  small bowel
  bile
  ileus
  crohn's
  intestines
  irritable bowel

Your alternative for bowel is not listed? Suggest!
Speaking about bowel, one probably shouldn't forget about fresh blood.

Other search terms related to bowel and their ratings are:
★★★★★ fresh blood
You have in mind a companion for bowel and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of bowel in all years. Click on graph for more.
bowel
colon
intestine