Mmmm, maybe. I thought Camberville was loosely organized around Cambridge-Somerville line, and in particular the central/western part of the border (from Inman to Teele). I wouldn't argue Ten Hills or Cambridgeport, or the far northwestern sector of Ward 7 (almost to the future Route 16 T stop) or even the Fresh Pond shopping area is included.

Inman Square, definitely counts, though. Maybe someone with cartographic experience can help set the boundaries...