The word "gives fragrance to" refers to something that emits a pleasant scent or aroma. There are several synonyms for this phrase, including "permeates with fragrance," "fills with scent," "scents," "perfumes," and "aromatizes." These words can be used interchangeably to describe the process of adding a fragrant element to something, such as a room, a piece of clothing, or even a person's body. The use of these synonyms can help to add variety and depth to one's writing and descriptions, making it more engaging and interesting to readers.