| Colostomy | | The frequent passage of liquid stools |
| Constipation | | Gas or air passed through the anus |
| Defecation | | A cone-shaped, solid drug that is inserted into a body opening; it melts at body temperature |
| Diarrhea | | The process of excreting feces from the rectum through the anus; a bowel movement |
| Enema | | Excreted feces |
| Fecal impaction | | A surgically created opening between the colon and abdominal wall |
| Fecal incontinence | | The prolonged retention and buildup of feces in the rectum |
| Feces | | The inability to control the passage of feces and gas through the anus |
| Flatulence | | A surgically created opening between the ileum and the abdominal wall |
| Flatus | | The excessive formation of gas or air in the stomach and intestines |
| Ileostomy | | A surgically created opening |
| Ostomy | | The semi-solid mass of waste products in the colon that is expelled through the anus |
| Stoma | | The introduction of fluid into the rectum and lower colon |
| Stool | | An opening |
| Suppository | | The passage of hard, dry stool |