Connections Hint Today Sun, Apr 7 #309

Need help with Connections puzzle #309 on Sun, Apr 7? Get your daily connections hint today! Find the hidden links between these 16 words: DUMP, MESS, PIGPEN, STY, FIRM, SOLID, SOUND, STABLE, CARAMEL, PEANUTS, POPCORN, PRIZE, CHARLEY, CRAZY, DARK, GIFT