Location:
* Next to: Simple and straightforward.
* Alongside: Implies moving or being in the same direction.
* Adjacent to: Formal and emphasizes closeness.
* Near: Less precise than "beside," but still conveys proximity.
* By: Similar to "beside," but often implies a more casual placement.
* At the side of: Emphasizes the position.
Comparison:
* Compared to: Highlights a difference or similarity.
* In contrast to: Emphasizes a difference.
* In addition to: Indicates something extra.
Emotional/Mental State:
* In addition to: Can imply a feeling of being overwhelmed.
* Apart from: Can imply a sense of isolation.
The best word to use will depend on the specific situation and what you want to emphasize.