stud (nail), stud (of horses).
stake (post), steak, stake (deposit).
step, steppe.
stair, stare.
stern (adj.), stern (of ship).
steal, steel, stele.
steep (adj.), steep (v.).
steer (direct), steer (young ox).
still (tranquil), still (distil).
stalk (stem), stalk (v.), stork.