Or search: bosk, flora, grove, botany, jungle, underbrush, vegetation
1 Syllable: S
book, brook, Brooke, Brooks, cook, Cooke, cooks, could, crook, foot, Foote, good, hood, hook, look, nook, ould, put, rook, routes, shook, should, shouldst, soot, stood, took, Tooke, wood, Wood's, would, wouldst
2 Syllables: US
afoot, backwoods, betook, caput, forsook, mistook, partook, unlooked, withstood
3 Syllables: UUS
overtook, underfoot, understood, undertook
4 Syllables: UUUS
misunderstood

Found 45 words across 4 groupings. Skipped 15 excess words of a similar stem.