In this chapter, we have looked exclusively at productivity as it concerns derivational processes. We can, however, also compare the productivity of various types of compounding. English has compounds that consist of two nouns (dog bed, windmill), two adjectives (bittersweet, blue-green), and two verbs (blow dry, stir-fry). Are all three types of compounding equally productive? (Hint: one way to start is by thinking of examples of NN, AA, and VV, and seeing which type gives you the most difficulty.) Give as much evidence as you can for your answer.