A design language is the abstract layer above a design system: the why behind the what. Where a design system defines what a button looks like, a design language explains why the button looks that way — discipline of restraint, mode of confidence, vocabulary of motion. AI2 Design catalogues design languages because they transfer better than design systems: an agent that absorbs a language can generate new components that didn't exist in the source.
Glossary · framework
Design Language
The grammar of decisions — palette, type, spacing, motion, voice — that makes a product visually consistent and recognizable.