Why is 'Karz' called Bollywood's 'cursed' title?

'Karz' became Bollywood's 'cursed' title after nine films carrying it flopped across four decades. Subhash Ghai's 1980 film 'Karz' had left Rishi Kapoor depressed after its failure, while failure of Himesh Reshammiya-starrer 'Karzzzz' pushed its makers to bankruptcy. Urmila Matondkar wasn't seen in any major film following its debacle. The last film with Karz in title release 10 years ago.