Clove pink is a flowering plant that belongs to the Dianthus family. It is a popular garden plant that is known for its fragrant, pink-colored flowers. However, there are several synonyms for the clove pink that are commonly used, including sweet William, carnation, and gillyflower. Sweet William is a term that is commonly used to describe several species of the clove pink, including Dianthus barbatus and Dianthus caryophyllus. Carnation is another synonym for the clove pink and is a term used to describe several species of Dianthus flowers. Gillyflower is a term used primarily in Europe and is used to describe several fragrant members of the Dianthus family.