Input and Output: The SRS defines what the software should do, while software design defines how it will be done.

Guidance: The SRS provides the requirements and constraints that guide the software design process.

Validation: Software design is validated against the SRS to ensure that all requirements are met.

Detail Level: The SRS includes high-level requirements, whereas software design provides detailed architecture and implementation plans.

Adaptation: Changes in the SRS may necessitate updates to the software design to reflect new or altered requirements.

Documentation: The SRS documents the intended functionality, while software design documents how the system will be structured and built to achieve that functionality.