V. The suffix er added to a root often makes homophones. The following are examples. (And see in List VI.)
byre, buyer (who buys).
butter (s.), butter (who butts).
better (adj.), better (who bets).
border, boarder.
dire, dyer.
founder (v.), founder (who founds).
geyser, gazer.
greater, grater (nutmeg).