~ 18 words related to bm as Noun.

1. fecal matter
2. faecal matter
3. feces
4. faeces
5. BM
6. stool
7. ordure
8. dejection
9. body waste
10. excretion
11. excreta
12. excrement
13. excretory product
14. bowel movement
15. movement
16. defecation
17. laxation
18. shitting