while
besides
in addition to
Structure
- Verb[る] + かたわら
- Noun + の + かたわら
Can be used when the subjects of the two actions are different
[かたわら describes two things happening at about the same time, but not simultaneously like verb[stem] + ながら]
[More emphasis is placed on what comes before かたわら than after; what follows かたわら is just additional information]