A lot of people do not know the difference. If there are any on here, Shepherds Pie is made with minced Lamb Cottage pie with other mince meat usually beef. Sorry for those who knew that but a I said some may not.
Blimey, do people really not know the difference? I find that hard (although not impossible) to believe. They might be prepared in a similar manner, but they come from two different animals; next you'll be telling me people don't know the difference between fried fish and fried chicken.