the world > space > relative position > quality of having sides or being a side > alongside [phrase] > on the right or left (3)
On the left-hand side; in the region to the left of a person or thing.
The left-hand side, part, or direction. Used chiefly with reference to local position from the point of observation, though also with reference…
In the region to the right of a person or thing; on the right-hand side. Now rare.