The phrase "making of" means the process of creating or producing something. However, there are several synonyms that can be used to replace this phrase. For example, "construction" and "fabrication" can be used to describe the making of physical objects. "Creation" and "development" are suitable synonyms for the making of ideas, concepts, and plans. The words "formation" and "fashioning" can also be used to describe the making of certain things. In the context of filmmaking, "behind the scenes" can be a synonym for the making of movies. Therefore, it entirely depends upon the context in which the word is used that decides its synonym.