The word "kekule" is a proper noun, which refers to the German chemist Friedrich August Kekule, who is known for his contributions to the development of the theory of chemical structure. Thus, there are no synonyms for the word "kekule" as it refers to a specific person and cannot be replaced by any other terms. However, some synonyms for the word "chemistry" (the subject that Kekule contributed to) include the study of matter, chemical science, and chemical phenomena. It is also worth noting that Kekule's name is often used to refer to the Kekule problem in organic chemistry, which involves predicting the structure of complex molecules.