Or search: gut, belly, venter, viscus, abdomen, stomach, intestine
1 Syllable: S
bowels, cowl, foul, fowl, growl, Howell, howl, owl, prowl, scowl, souled, towel, vowel
2 Syllables: US
avowal

Found 14 words across 2 groupings. Skipped 8 excess words of a similar stem.