Filing cards are commonly used in offices and other organizational settings to keep track of important information. There are several synonyms for this term, including index cards, record cards, and information cards. These cards can be made from various materials, such as paper or cardstock, and can be sorted alphabetically or numerically for easy access. Another popular synonym for filing cards is note cards, which are often used for taking notes, jotting down reminders, or as flashcards for studying. No matter what you call them, filing cards are an indispensable tool for keeping important information organized and easily accessible.