Cauldron rhymes with:
children, grandchildren, schoolchildren, stepchildren, waldren, waldron, audran, chadron, children, condron, excedrin, gendron, grandchildren, hendron, hydron, kindran, madron, octahedron, padron, philodendron, polyhedron, ravindran, rhododendron, schoolchildren, squadron, stepchildren, tetrahedron, vorndran, waldren, waldron
Cauldron sounds like:
calderon, calderone, children, coldiron, coldren, coltrain, coltrane, coltrin, cyclotron