How does software design compare with design in other disciplines? Using a general design framework--John Gero's Function-Behavior-Structure framework--as a reference, the author contrasts the software engineering process with processes in other engineering disciplines. The author summarizes FBS, then maps the elements and processes in the framework to artifacts and processes in the Rational Unified Process. He notes that software engineers use certain common terms, such as design, analysis, and documentation, in significantly different ways from other engineers. Moreover, the author finds that "design" in software engineering is more limited in scope than in other fields. Having a broader understanding of other engineering disciplines--and software engineering's place among them--can benefit software engineers involved in multidisciplinary projects. The author also discusses lessons applicable to research and to other aspects of software engineering.