Phatbeetle, this isn't an official thing, just my personal definition. For background, my husband used to be an early mediaeval historian and archaeologist, and told me about the interesting use of words between England and Scotland in the early second millennium wherein the king down south was King of England but up here he was King of Scots. This implied that the king in England was ruler of the land, while the king in Scotland was leader of the people who lived on the land, and this lives on today in the Claim of Right, which states that the people of Scotland are sovereign, as opposed to the UK, which states that parliament is sovereign. During indyref, one of his lecturers, who is from the south of England but pro-indy, said in a radio interview that while he couldn't be a Scot because he wasn't from here he could be and was Scottish because he made his home here, but later realised that it made more sense the other way around, and I take it from that.