Play NYT Connections Puzzle #589 Sun, Dec 15

Find groups of four related words Need hints?

Solve NYT Connections puzzle #589 - Group 16 words into 4 categories: CLOVE, MACE, NUTMEG, PEPPER, FLAIL, FLOP, FLOUNDER, TANK, FLIP, LEAF, RIFFLE, THUMB, KEY, MAR, SPEAR, STYLE.