Perfume fragrances often contain a variety of floral notes, and one of the most popular is LILAC. LILAC is a five-letter word that is used to describe a type of perfume fragrance that has a sweet, floral scent. It is derived from the flower of the same name, which is native to Europe and parts of Asia. The scent of LILAC is often used in perfumes, colognes, and other fragrances to create a light, airy aroma.