Connections Hint Today Sat, Dec 14 #581

Need help with Connections puzzle #581 on Sat, Dec 14? Get your daily connections hint today! Find the hidden links between these 16 words: FLUKE, MULLET, SOLE, TANG, GOING, ONCE, SOLD, TWICE, POUND, REAL, SOL, YUAN, BUTTER, DIVA, SOLO, WORLD