Change or Shift:
* Transformation
* Conversion
* Evolution
* Metamorphosis
* Mutation
* Shift
* Changeover
* Move
* Passage
* Progression
* Development
Movement from one state to another:
* Passage
* Move
* Transfer
* Migration
* Progression
* Advancement
* Evolution
Process of changing:
* Transformation
* Conversion
* Evolution
* Metamorphosis
* Shift
Specific situations:
* Crossover (in music)
* Handoff (in business)
* Hand-over (in legal contexts)
* Conversion (in technology)
* Migration (in computer systems)
To find the most suitable synonym, consider the context of the word "transition" and choose the word that best captures the specific meaning.