reflection
[C/U] Both
pl: reflections
The word evokes a sense of mirroring, whether the mirroring is physical or mental. When used for light, it describes a literal bounce-back of an image, creating a twin of the original object. This creates a feeling of symmetry and observation. When used for thought, it describes a mental mirroring where a person looks back at their own actions. This usage is often associated with stillness, introspection, and a slow, deliberate pace, distinguishing it from quick thinking or instinctive reaction.
Countable when referring to a specific image in a mirror (three reflections in the hall). Uncountable when referring to the act of thinking deeply (a period of deep reflection).