As mentioned at http://meta.genealogy.stackexchange.com/q/1372/104 (please read first) we need agreed overviews of the meaning of Genealogy and Family History to form an umbrella for our definition of on-topic questions. I'm aware there have been various discussions on this in various places, but I'm hoping we'll use this question as a place to consolidate discussions in one place for easy reference and finalising our conclusion.