Change naming in the app.

[chaitanyya]

Names like nodes, gravity, charge etc can be confusing for someone non-technical.

[urstrulykkr]

I would like to work on this issue .
Could you please let me know the file to which you are referring to..

[Aditya-1804078]

I would like to work on this issue. Please let me know the file and the issue you are referring to.