Play NYT Connections Puzzle #678 Wed, Mar 12

Find groups of four related words Need hints?

Solve NYT Connections puzzle #678 - Group 16 words into 4 categories: BUTTER, EGGS, FLOUR, SUGAR, CARDINAL, ELMO, KETCHUP, ROSE, MONTH, ORANGE, PURPLE, SILVER, COTTON, EYE, JOHN, ROCK.