The Canadian Caregiver Coalition has a very broad definition. We call them family caregivers, but that includes family, friends, relatives, and neighbours. Just for ease of discussion, we call them family caregivers to differentiate them from the paid caregivers. We used to call them informal caregivers, but they say there is nothing informal about being a family caregiver.
On October 31st, 2011. See this statement in context.