What puns are used in The Scarlet Letter?

One pun in The Scarlet Letter occurs when the character Dimmesdale comments on his own guilt, saying it has "a black weeds a twist in his heart," which is a play on Words as "weeds" may refer to both unwanted plants and to twisted or tangled threads. Another pun is found in the title itself, as the "scarlet letter" serves as both a literal punishment and a symbol of shame.