The term "software design description" can be replaced with several other phrases that convey a similar meaning. Common synonyms include "system architecture specification," "software blueprint," and "program design document." Other options may include "technical specification," "design document," "software design specification," or simply "software design." These terms are often used interchangeably in the software development industry to describe the detailed plans and specifications that guide the creation of software programs. Regardless of the specific terminology used, the goal of these documents is to clearly define the functionality and features of the software, as well as the underlying technology and coding standards that will be used to implement it.