Usually refers to actually setting someone or something free from a confined space or restrictions.

Physical Release

Commonly used in casual contexts or informal conversation, not typically formal situations.

Less Formal

Often used metaphorically to describe giving freedom to non-physical things like ideas or emotions.

When about feelings, it suggests a strong or enthusiastic expression of that emotion.

Implies the action of release happens quickly and usually leads to an immediate response.

Suggests that once let loose, the subject is no longer under direct control and acts independently.