Indicates exact position, often used to describe buildings or objects' orientation.

Physical Location

Used to describe the part furthest from the front, like the end of a queue or a vehicle.

Literal Rear

Refers to areas that are not immediately seen or are less exposed.

Suggests a spot where one can stay unnoticed or unbothered by others.

Indicates a part hidden from view by another object.

Especially for paper or coins, it means the side viewed less often.

Note that using 'back of' as an adverb is old-fashioned and rare today.

When used as an adverb, it can imply being further away from a point of interest.