When it comes to the term "catalog card," there are several synonyms that can be used to describe the same thing. One of the most common alternatives is "library card," which refers to the physical card that is used to check out books from a library. Other options include "index card," which is often used to organize information for research or studying purposes, and "bibliographic card," which focuses specifically on the bibliographic information associated with a particular work. "Catalogue card" is another potential synonym, as it highlights the importance of having all relevant information about a book or other piece of media in a centralized location. No matter which term is used, the key is to effectively communicate the purpose and function of the card in question.