The term "normal transfer size" refers to the standard size or amount of data that is commonly transferred between two devices or systems. There are several synonyms that can be used to describe this, such as "typical transfer size," "average data transfer," or "usual data exchange." Other suitable alternatives could include terms like "familiar file size," "routine data transfer," and "common transfer rate." These phrases all refer to the same concept of a typical transfer size, and can be used interchangeably depending on the context in which they are being used. Whether you're describing data transfers between computers, mobile devices, or other interconnected systems, there are a variety of synonyms to choose from to accurately convey the idea of a standard transfer size.