IRIX is a term that refers to the operating system developed by Silicon Graphics, Inc. If you are looking to find synonyms for this term, some of the words that can be used are UNIX, Linux, and Solaris. These are all operating systems that are used to run computer programs and applications. The difference between these terms lies in their specific features, functionality, and development. UNIX and Linux are popular open-source operating systems that are widely used in servers and workstations. Solaris, on the other hand, is a commercial operating system that is developed by Oracle Corporation. Regardless of the synonym used, these operating systems are all designed to provide stability, security, and performance to users.