What are the European football derbies?

Rome Derby: Lazio vs Rome

Italian national derby: Juventus vs Inter Milan

Manchester Derby: Manchester United vs Manchester City

Red Derby: Liverpool vs Manchester United

London Derby: Arsenal vs Chelsea

North London Derby: Arsenal vs Tottenham Hotspur

Barcelona Derby: Barcelona vs Spaniard

Spanish national derby: Barcelona vs Arsenal

Then the Bundesliga, Ruhr-gebiet Derby, Dortmund, Leverkusen, Schalke 04 and Menxing.

In fact, neither the national derby nor the red derby above can be called a real derby. Derby is to be in a city, and it is best to use the stadium (such as Milan Derby). This is the real derby.