Used metaphorically to describe a cheerful and positive person in a difficult situation.

Metaphoric Person

Suggests the person has a significant positive emotional effect on others.

Emotional Impact

It's an idiomatic expression, not referring to actual sunshine.

Indicates a brief moment of happiness or hope in otherwise tough circumstances.

It's used when the positive aspect is small yet significant.

Refers to an actual beam of sunlight, often creating a pleasant or picturesque scene.

Often used to paint a vivid picture in storytelling or descriptions.

In its literal sense, it carries no emotional weight unlike the idiomatic uses.