The ASCII character set is a widely-used system for encoding characters in computers. However, there are other synonym sets that can be used as well. Some of these alternatives include the Unicode character set, which includes a much larger range of characters from different languages and symbols. Another synonym is the extended ASCII character set, which includes characters beyond the standard set that ASCII uses. Other alternatives include the EBCDIC character set, which was developed by IBM, and the ISO Latin character set, which is commonly used in Europe. No matter which character set you use, it's important to understand how each one works and the types of characters they include.