Or search: cop, pig, rot, bunk, cows, fake, fiat, fuzz, guff, horn, oxen, push, sham, flub, kine
1 Syllable: S
bull, ful, full, pull, Schultz, wolf, Wolfe, Wolff, wolves, wool

Found 10 words across 1 groupings. Skipped 3 excess words of a similar stem.