---
description: Easing curves and duration scale — the raw timing vocabulary every animation references
variables:
  - key: motion.easing.default
    type: text
    label: Default
    value: ""
    section: motion
  - key: motion.easing.enter
    type: text
    label: Enter
    value: ""
    section: motion
  - key: motion.easing.exit
    type: text
    label: Exit
    value: ""
    section: motion
  - key: motion.easing.expressive
    type: text
    label: Expressive
    value: ""
    section: motion
  - key: motion.duration.instant
    type: number
    label: Instant
    value: ""
    section: motion
  - key: motion.duration.fast
    type: number
    label: Fast
    value: ""
    section: motion
  - key: motion.duration.normal
    type: number
    label: Normal
    value: ""
    section: motion
  - key: motion.duration.slow
    type: number
    label: Slow
    value: ""
    section: motion
  - key: motion.duration.glacial
    type: number
    label: Glacial
    value: ""
    section: motion
---

# Motion

Named easing curves and a duration scale. Curves define *how* something accelerates; durations define *how long*. Together they are the timing vocabulary that every animation recipe in animations.md references.
