Often has a negative feel, implying harsh or unfair confinement.

Negative Connotation

The action of immuring is typically forceful and against the will of the person confined.

Forceful Act

The confinement usually involves physical barriers, like walls or bars.

Sometimes used with things, indicating protection or preservation.

Can be metaphorical for trapping ideas or feelings.

In some contexts, can imply safeguarding rather than just confining.