Frostworks is a rare and unique word that refers to ornamental frost or ice formations that grow on buildings or trees. Synonyms for frostworks include hoarfrost, rime, ice crystals, and fern frost. Other synonyms include frost patterns, icy decorations, and snowflakes, which are typically used to describe the intricate shapes and designs created by frost on windows and other surfaces. Frost-glace, frost-moulding, and ice sculpture are other synonyms often used to describe frostworks. These words are often used in poetry and literature to describe the beauty of frost formations during winter seasons.